The amine 8-{4-[(6-phenylpyridin-3-yl)methyl]piperazin-1-yl}-3,4-dihydroquinolin-2(1H)-one was crystallized as the hydrochloride salt 4-(2-oxo-1,2,3,4-tetrahydroquinolin-8-yl)-1-[(6-phenylpyridin-3-yl)methyl]piperazin-1-ium chloride. Its structure is compared to that of the salt 4-(2-oxo-1,2,3,4-tetrahydroquinolin-8-yl)-1-{[6-(4-fluorophenyl)pyridin-3-yl]methyl}piperazin-1-ium chloride monohydrate, a fluorinated analogue.
Keywords: crystal structure, dihydroquinolin-2(1H)-one, piperazine, hydrochloride, molecular salt, dopamine D2 receptor, serotonin 5-HT1a receptor, hydrogen bonding, Hirshfeld surface analysis
Abstract
The amine 8-{4-[(6-phenylpyridin-3-yl)methyl]piperazin-1-yl}-3,4-dihydroquinolin-2(1H)-one was crystallized as the hydrochloride salt, 4-(2-oxo-1,2,3,4-tetrahydroquinolin-8-yl)-1-[(6-phenylpyridin-3-yl)methyl]piperazin-1-ium chloride, C25H27N4 +·Cl− (I·HCl). The conformation of the organic cation is half-moon in shape enclosing the chloride anion. The piperidine ring of the 3,4-dihydroquinolin-2(1H)-one moiety has a screw-boat conformation, while the piperazine ring has a chair conformation. In the biaryl group, the pyridine ring is inclined to the phenyl ring by 40.17 (7) and by 36.86 (8)° to the aromatic ring of the quinoline moiety. In the crystal, the cations are linked by pairwise N—H⋯O hydrogen bonds, forming inversion dimers enclosing an R 2 2(8) ring motif. The Cl− anion is linked to the cation by an N—H⋯Cl hydrogen bond. These units are linked by a series of C—H⋯O, C—H⋯N and C—H⋯Cl hydrogen bonds, forming layers lying parallel to the ab plane.
Chemical context
Schizophrenia is a psychiatric illness afflicting over 1% of the world’s population. Adoprazine© and Bifeprunox© (Fig. 1 ▸) are two drugs that were developed for the treatment of Schizophrenia in the early 2000s. The main action of these two compounds is to combine dopamine D2 receptor blockade with serotonin 5-HT1A receptor activation rather than antagonism (Feenstra et al., 2001 ▸, 2006 ▸). In continuing efforts in this field, Ullah and collaborators have synthesized a series of compounds that are structural analogues of Adoprazine© and Bifeprunox© (Ullah, 2012 ▸, 2014a ▸,b ▸; Ullah & Al-Shaheri, 2012 ▸). These include a number of 1-aryl-4-(biarylmethylene)piperazines (Ullah, 2012 ▸), such as 8-{4-[(6-phenylpyridin-3-yl)methyl]piperazin-1-yl}-3,4-dihydroquinolin-2(1H)-one (I), and 8-(4-{[6-(4-fluorophenyl)pyridin-3-yl]methyl}piperazin-1-yl)-3,4-dihydroquinolin-2(1H)-one (II) Ghani et al. (2014 ▸) have reported that the D2 receptor binding affinity of compounds I and II are K i = 28.4 nM for I and 42.0 nM for II. The 5-HT1A receptor binding affinities were reported to be K i = 4.30 nM for I and 52.5 nM for II. Hence, inserting a fluorine atom in the phenylpyridine unit in II did not improve its binding affinity compared to that of I. Full details concerning these assays are given in Ghani et al. (2014 ▸).
Figure 1.
Chemical diagrams for adoprazine, bifeprunoc and compounds I and II.
The crystal structure of the hydrochloride salt of II has been reported previously (Ullah & Altaf, 2014 ▸) and will be compared here to that of the hydrochloride salt of compound I.
Structural commentary
Due to the difficulty of forming suitable crystals for X-ray diffraction analysis compounds I and II were converted to their hydrochloride salts by treatment with HCl in MeOH.
The organic cation of I·HCl has a half-moon shape enclosing the chloride anion (Fig. 2 ▸). The molecular salt II·HCl crystallized as a monohydrate and here, while the cation also has a half-moon shape, it encloses the water molecule of crystallization (Ullah & Altaf, 2014 ▸; see Fig. S1 in the supporting information). The two cations differ essentially in the conformation of the biaryl group (rings B = N4/C15–C19 and C = C20–C25) and their orientation with respect to the aromatic ring (A = C4–C9) of the 3,4-dihydroquinolin-2(1H)-one moiety. This is illustrated by the view of their structural overlap, shown in Fig. 3 ▸. In I·HCl, pyridine ring B is inclined to phenyl ring C by 40.17 (8)° while in II·HCl the equivalent dihedral angle is 10.06 (11)°. In I·HCl, ring A is inclined to rings B and C by 36.86 (8) and 14.16 (8)°, respectively. These dihedral angles differ considerably from the dihedral angles in II·HCl, where ring A is inclined to rings B and C by 51.20 (9) and 41.40 (11)°, respectively. In both compounds, the piperidine ring (N1/C1–C4/C9) has a screw-boat conformation with the torsion angle C1—C2—C3—C4 being −56.17 (18)° in I·HCl and −55.6 (2)° in II·HCl. In both compounds, the piperazine ring (N2/N3/C10–C13) has a chair conformation.
Figure 2.
A view of the molecular structure of I·HCl, with atom labelling. The displacement ellipsoids are drawn at the 50% probability level.
Figure 3.
A view of the structural overlap of the cations of salts I·HCl and II·HCl; r.m.s. deviation 0.125 Å (Mercury; Macrae et al., 2020 ▸). The structure of the II·HCl cation is given in red with the F atom in yellow (see also supplementary figure S1; Ullah & Altaf, 2014 ▸).
Supramolecular features
In the crystal of I·HCl, the organic cations are linked by a pair of N—H⋯O hydrogen bonds, forming an inversion dimer enclosing an 
(8) ring motif (Fig. 4 ▸ and Table 1 ▸). The Cl− anion is linked to the cation by an N—H⋯Cl hydrogen bond (Fig. 4 ▸ and Table 1 ▸). The dimers are linked by a C—H⋯O hydrogen bond, forming ribbons propagating along the a-axis direction. The ribbons are then linked via C—H⋯Cl hydrogen bonds to form layers lying parallel to the ab plane (Fig. 5 ▸ and Table 1 ▸). There are C—H⋯π(C4–C9) contacts present within the layers (Table 1 ▸), but there are no significant contacts present between the layers.
Figure 4.
A view of the hydrogen bonded dimer formation in the crystal of salt I·HCl. Hydrogen bonds are shown as dashed lines (see Table 1 ▸).
Table 1. Hydrogen-bond geometry (Å, °).
Cg is the centroid of the C4–C9 ring.
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N1—H1N⋯O1i | 0.85 (2) | 2.01 (2) | 2.844 (2) | 168 (2) |
| N3—H3N⋯Cl1ii | 0.97 (2) | 2.12 (2) | 3.065 (1) | 167 (2) |
| C10—H10B⋯O1iii | 0.99 | 2.40 | 3.151 (2) | 132 |
| C11—H11A⋯Cl1iii | 0.99 | 2.80 | 3.668 (2) | 147 |
| C12—H12A⋯Cl1 | 0.99 | 2.81 | 3.520 (2) | 129 |
| C12—H12B⋯O1i | 0.99 | 2.26 | 3.123 (2) | 144 |
| C13—H13A⋯N1 | 0.99 | 2.53 | 3.138 (2) | 120 |
| C14—H14A⋯Cl1iii | 0.99 | 2.71 | 3.585 (2) | 147 |
| C21—H21⋯Cl1 | 0.95 | 2.83 | 3.757 (2) | 165 |
| C18—H18⋯Cg ii | 0.95 | 2.83 | 3.487 (2) | 127 |
Symmetry codes: (i) 
; (ii) 
; (iii) 
.
Figure 5.
A view along the [111] direction of the crystal packing of salt I·HCl. Hydrogen bonds are shown as dashed lines (see Table 1 ▸).
In the crystal of II·HCl (Ullah & Altaf, 2014 ▸; see Figs. S2 and S3, and Table S1 in the supporting information), the cations are linked by the water molecules of crystallization via N—H⋯Ow and Ow—H⋯O hydrogen bonds to form dimers with 
(12) ring motifs. The dimers are in turn linked by the Cl− anions, via Ow—H⋯Cl⋯H—N hydrogen bonds, to form chains propagating along the b-axis direction. The chains are linked via C—H⋯Cl and C—H⋯O hydrogen bonds, forming layers parallel to the ab plane.
In both cases, hydrogen-bonded layers are formed stacking along the c-axis direction and lying parallel to the ab plane. There are no significant directional inter-layer contacts present in either crystal structure.
Hirshfeld surface analysis and two-dimensional fingerprint plots
The Hirshfeld surface analysis (Spackman & Jayatilaka, 2009 ▸) and the associated two-dimensional fingerprint plots (McKinnon et al., 2007 ▸) were performed with CrystalExplorer17 (Turner et al., 2017 ▸) following the protocol of Tiekink and collaborators (Tan et al., 2019 ▸).
The Hirshfeld surfaces are colour-mapped with the normalized contact distance, d norm, varying from red (distances shorter than the sum of the van der Waals radii) through white to blue (distances longer than the sum of the van der Waals radii). The Hirshfeld surfaces (HS) of I·HCl and II·HCl mapped over d norm are given in Fig. 6 ▸. It is evident from Fig. 6 ▸ a and 6b that there are important contacts present in the crystals of both compounds, the strong hydrogen bonds (Table 1 ▸ and Table S1) being indicated by the large red zones.
Figure 6.
The Hirshfeld surfaces of compounds I·HCl and II·HCl, mapped over d norm in the colour ranges of −0.5847 to 1.5642 au. and −0.5555 to 1.5111 au., respectively.
The percentage contributions of inter-atomic contacts to the HS for both compounds are compared in Table 2 ▸. The two-dimensional fingerprint plots for the title salt, I·HCl, and those for II·HCl, are compared in Figs. 7 ▸ and 8 ▸. They reveal, as expected, that the principal contributions to the overall HS surface involve H⋯H contacts at 51.5 and 42.1%, respectively. The difference is attributed to the presence of F⋯H/H⋯F contacts in the crystal of II·HCl, amounting to 7.5%. The second most important contribution to the HS is from the C⋯H/H⋯C contacts at 20.2 and 20.5%, for I·HCl and II·HCl, respectively. These are followed by the Cl⋯H⋯Cl contacts at 10.1 and 12.8% for I·HCl and II·HCl, respectively, and O⋯H/H⋯O contacts at, respectively, 7.4 and 8.7%. The N⋯H/H⋯N contacts contribute, respectively, 6.5 and 5.3%. The C⋯C contacts in I·HCl contribute 2.9%, while the C⋯F contacts in II·HCl contribute 1.4%. All other atom⋯atom contacts contribute <1% to the HS for both compounds.
Table 2. Principal percentage contributions of inter-atomic contacts to the Hirshfeld surfaces of I·HCl and II·HCl.
| Contact | I·HCl % contribution | II·HCl % contribution |
|---|---|---|
| H⋯H | 51.5 | 42.1 |
| C⋯H/H⋯C | 20.2 | 20.5 |
| Cl⋯H/H⋯Cl | 10.1 | 12.8 |
| O⋯H/H⋯O | 7.4 | 8.7 |
| N⋯H/H⋯N | 6.5 | 5.3 |
| F⋯H/H⋯F | – | 7.5 |
| C⋯F/F⋯C | – | 1.4 |
| C⋯C | 2.9 | 0.8 |
Figure 7.
The two-dimensional fingerprint plots for compounds (a) I·HCl and (b) II·HCl, and those delineated into H⋯H, C⋯H/H⋯C, and Cl⋯H/H⋯Cl contacts.
Figure 8.
The two-dimensional fingerprint plots for compounds (a) I·HCl delineated into O⋯H/H⋯O, N⋯H/H⋯N and C⋯C, and (b) II·HCl delineated into O⋯H/H⋯O, N⋯H/H⋯N, F⋯H/H⋯F, C⋯F/F⋯C and C⋯C contacts.
Database survey
A search of the Cambridge Structural Database (CSD, Version 5.42, last update November 2020; Groom et al., 2016 ▸) for 8-(piperazin-1-yl)-3,4-dihydroquinolin-2(1H)-ones gave three hits for compounds 8-{1-[(4′-fluoro-[1,1′-biphenyl]-3-yl)methyl]piperidin-4-yl}-3,4-dihydroquinolin-2(1H)-one (III), that crystallized as a chloroform 0.25-solvate (CSD refcode FITSEI; Ullah & Stoeckli-Evans, 2014 ▸), 8-[4-([1,1′-biphenyl]-3-ylmethyl)piperazin-1-yl]quinolin-2(1H)-one (IV) (REYHIP; Ullah et al., 2017 ▸) and 8-[1-([1,1′-biphenyl]-3-ylmethyl)piperidin-4-yl]-3,4-dihydroquinolin-2(1H)-one (V) (REYHEL; Ullah et al., 2017 ▸). Their chemical structures are shown in Fig. 9 ▸, together with those for compounds 8-[4-([1,1′-biphenyl]-3-ylmethyl)piperazin-1-yl]-2-methoxyquinoline (VI) (AKUXIQ; Ullah & Altaf, 2014 ▸), 8-(1-{[5-(cyclopent-1-en-1-yl)pyridin-3-yl]methyl}piperidin-4-yl)-3,4-dihydroquinolin-2(1H)-one (VII) (AKUWOV; Ullah et al., 2015 ▸) and 8-{1-[3-(cyclopent-1-en-1-yl)benzyl]piperidin-4-yl}-3,4-dihydroquinolin-2(1H)-one (VIII) (AKUWUB; Ullah et al., 2015 ▸). The CIFs for compounds II·HCl (AKUXEM; Ullah & Altaf, 2014 ▸) and VI–VIII have been updated recently in the CSD.
Figure 9.
Chemical diagrams of similar compounds deposited with the CSD (Groom et al., 2016 ▸); see § 5 Database survey.
Compounds III to VIII all have a similar conformation; a curved or half-moon shape, as shown for the cation of I·HCl in Fig. 2 ▸. The piperidine rings of the dihydroquinoline units in compounds I·HCl, II·HCl, III, V, VII and VIII have screw-boat conformations. The piperidine or piperazine rings in all eight compounds have chair conformations.
Synthesis and crystallization
The synthesis of compounds I and II has been reported (Ullah, 2012 ▸; compounds 5c and 5d in that paper). Colourless plate-like crystals of their hydrochloride salts were obtained by slow evaporation of solutions in dichloromethane and methanol; ratios (8:3) and (8.5:1.5), respectively.
Refinement
Crystal data, data collection and structure refinement details are summarized in Table 3 ▸. The NH H atoms were located in a difference electron-density map and freely refined. The C-bound H atoms were included in calculated positions and refined as riding on the parent atom: C—H = 0.95–0.99 Å with U iso(H) = 1.2U eq(C).
Table 3. Experimental details.
| Crystal data | |
| Chemical formula | C25H27N4O+·Cl− |
| M r | 434.95 |
| Crystal system, space group | Triclinic, P
|
| Temperature (K) | 173 |
| a, b, c (Å) | 8.4791 (8), 10.4091 (10), 13.6862 (14) |
| α, β, γ (°) | 90.138 (8), 94.833 (8), 113.745 (7) |
| V (Å3) | 1100.88 (19) |
| Z | 2 |
| Radiation type | Mo Kα |
| μ (mm−1) | 0.20 |
| Crystal size (mm) | 0.45 × 0.33 × 0.18 |
| Data collection | |
| Diffractometer | Stoe IPDS 2 |
| Absorption correction | Multi-scan (MULABS; Spek, 2020 ▸) |
| T min, T max | 0.379, 1.000 |
| No. of measured, independent and observed [I > 2σ(I)] reflections | 13410, 4156, 2912 |
| R int | 0.077 |
| (sin θ/λ)max (Å−1) | 0.609 |
| Refinement | |
| R[F 2 > 2σ(F 2)], wR(F 2), S | 0.033, 0.071, 0.83 |
| No. of reflections | 4156 |
| No. of parameters | 289 |
| H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
| Δρmax, Δρmin (e Å−3) | 0.22, −0.22 |
Supplementary Material
Crystal structure: contains datablock(s) I, Global. DOI: 10.1107/S2056989021000979/hb7965sup1.cif
Structure factors: contains datablock(s) I. DOI: 10.1107/S2056989021000979/hb7965Isup2.hkl
Details concerning structure II.HCl. DOI: 10.1107/S2056989021000979/hb7965sup3.pdf
CCDC reference: 2059142
Additional supporting information: crystallographic information; 3D view; checkCIF report
Acknowledgments
HSE is grateful to the University of Neuchâtel for their support over the years.
supplementary crystallographic information
Crystal data
| C25H27N4O+·Cl− | Z = 2 |
| Mr = 434.95 | F(000) = 460 |
| Triclinic, P1 | Dx = 1.312 Mg m−3 |
| a = 8.4791 (8) Å | Mo Kα radiation, λ = 0.71073 Å |
| b = 10.4091 (10) Å | Cell parameters from 9997 reflections |
| c = 13.6862 (14) Å | θ = 1.5–26.1° |
| α = 90.138 (8)° | µ = 0.20 mm−1 |
| β = 94.833 (8)° | T = 173 K |
| γ = 113.745 (7)° | Rod, colourless |
| V = 1100.88 (19) Å3 | 0.45 × 0.33 × 0.18 mm |
Data collection
| Stoe IPDS 2 diffractometer | 4156 independent reflections |
| Radiation source: fine-focus sealed tube | 2912 reflections with I > 2σ(I) |
| Plane graphite monochromator | Rint = 0.077 |
| φ + ω scans | θmax = 25.6°, θmin = 1.5° |
| Absorption correction: multi-scan (MULABS; Spek, 2020) | h = −10→9 |
| Tmin = 0.379, Tmax = 1.000 | k = −12→12 |
| 13410 measured reflections | l = −16→16 |
Refinement
| Refinement on F2 | Secondary atom site location: difference Fourier map |
| Least-squares matrix: full | Hydrogen site location: mixed |
| R[F2 > 2σ(F2)] = 0.033 | H atoms treated by a mixture of independent and constrained refinement |
| wR(F2) = 0.071 | w = 1/[σ2(Fo2) + (0.0262P)2] where P = (Fo2 + 2Fc2)/3 |
| S = 0.83 | (Δ/σ)max = 0.001 |
| 4156 reflections | Δρmax = 0.22 e Å−3 |
| 289 parameters | Δρmin = −0.22 e Å−3 |
| 0 restraints | Extinction correction: (SHELXL-2018/3; Sheldrick, 2015), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
| Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0061 (11) |
Special details
| Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2)
| x | y | z | Uiso*/Ueq | ||
| O1 | −0.17052 (13) | 0.47203 (11) | −0.07307 (8) | 0.0288 (3) | |
| N1 | 0.07882 (16) | 0.49233 (13) | −0.13301 (10) | 0.0234 (3) | |
| H1N | 0.122 (2) | 0.5073 (18) | −0.0734 (13) | 0.034 (5)* | |
| N2 | 0.44879 (14) | 0.63611 (12) | −0.11540 (9) | 0.0220 (3) | |
| N3 | 0.68062 (15) | 0.82122 (13) | 0.04180 (9) | 0.0217 (3) | |
| H3N | 0.746 (2) | 0.906 (2) | 0.0090 (13) | 0.052 (5)* | |
| N4 | 0.94060 (18) | 1.20937 (14) | 0.25205 (11) | 0.0399 (4) | |
| C1 | −0.09235 (18) | 0.46487 (15) | −0.14318 (11) | 0.0236 (3) | |
| C2 | −0.1799 (2) | 0.42765 (18) | −0.24529 (12) | 0.0329 (4) | |
| H2A | −0.160759 | 0.514512 | −0.280987 | 0.040* | |
| H2B | −0.306002 | 0.375119 | −0.242625 | 0.040* | |
| C3 | −0.1077 (2) | 0.33797 (19) | −0.29954 (13) | 0.0392 (4) | |
| H3A | −0.135909 | 0.247286 | −0.267359 | 0.047* | |
| H3B | −0.160866 | 0.318222 | −0.368136 | 0.047* | |
| C4 | 0.0858 (2) | 0.41520 (16) | −0.29844 (12) | 0.0302 (4) | |
| C5 | 0.1751 (2) | 0.41199 (19) | −0.37763 (13) | 0.0392 (4) | |
| H5 | 0.114179 | 0.360241 | −0.436140 | 0.047* | |
| C6 | 0.3535 (2) | 0.48412 (19) | −0.37196 (13) | 0.0392 (4) | |
| H6 | 0.414790 | 0.480812 | −0.426264 | 0.047* | |
| C7 | 0.4424 (2) | 0.56092 (17) | −0.28716 (12) | 0.0310 (4) | |
| H7 | 0.564389 | 0.610806 | −0.284514 | 0.037* | |
| C8 | 0.35719 (18) | 0.56693 (15) | −0.20549 (11) | 0.0230 (3) | |
| C9 | 0.17520 (18) | 0.49231 (15) | −0.21240 (11) | 0.0228 (3) | |
| C10 | 0.63546 (18) | 0.67238 (16) | −0.10867 (11) | 0.0266 (4) | |
| H10A | 0.692624 | 0.755875 | −0.147562 | 0.032* | |
| H10B | 0.656720 | 0.593449 | −0.136332 | 0.032* | |
| C11 | 0.71077 (19) | 0.70267 (16) | −0.00407 (11) | 0.0256 (4) | |
| H11A | 0.836721 | 0.727272 | −0.001024 | 0.031* | |
| H11B | 0.657845 | 0.617257 | 0.033766 | 0.031* | |
| C12 | 0.49249 (17) | 0.79433 (16) | 0.02658 (11) | 0.0238 (3) | |
| H12A | 0.476973 | 0.878517 | 0.049257 | 0.029* | |
| H12B | 0.425884 | 0.715170 | 0.066760 | 0.029* | |
| C13 | 0.42172 (18) | 0.75986 (15) | −0.08004 (11) | 0.0232 (3) | |
| H13A | 0.296647 | 0.739395 | −0.086798 | 0.028* | |
| H13B | 0.481455 | 0.841377 | −0.120110 | 0.028* | |
| C14 | 0.74694 (19) | 0.83801 (16) | 0.14807 (11) | 0.0271 (4) | |
| H14A | 0.863559 | 0.836905 | 0.153532 | 0.033* | |
| H14B | 0.670376 | 0.755999 | 0.182549 | 0.033* | |
| C15 | 0.75825 (19) | 0.96984 (16) | 0.19971 (11) | 0.0259 (4) | |
| C16 | 0.6286 (2) | 0.97397 (16) | 0.25369 (11) | 0.0276 (4) | |
| H16 | 0.521948 | 0.894116 | 0.253316 | 0.033* | |
| C17 | 0.6549 (2) | 1.09519 (16) | 0.30836 (11) | 0.0289 (4) | |
| C18 | 0.8145 (2) | 1.20792 (17) | 0.30499 (12) | 0.0354 (4) | |
| H18 | 0.835305 | 1.290278 | 0.343377 | 0.042* | |
| C19 | 0.9109 (2) | 1.09080 (17) | 0.20072 (13) | 0.0351 (4) | |
| H19 | 0.998875 | 1.089041 | 0.162807 | 0.042* | |
| C20 | 0.5209 (2) | 1.10509 (17) | 0.36734 (12) | 0.0326 (4) | |
| C21 | 0.3467 (2) | 1.04802 (18) | 0.33182 (13) | 0.0366 (4) | |
| H21 | 0.312714 | 1.001744 | 0.268836 | 0.044* | |
| C22 | 0.2225 (3) | 1.0581 (2) | 0.38747 (14) | 0.0480 (5) | |
| H22 | 0.103978 | 1.017354 | 0.362924 | 0.058* | |
| C23 | 0.2710 (3) | 1.1276 (2) | 0.47900 (15) | 0.0557 (6) | |
| H23 | 0.186196 | 1.135071 | 0.517087 | 0.067* | |
| C24 | 0.4438 (3) | 1.1856 (2) | 0.51400 (14) | 0.0515 (5) | |
| H24 | 0.477753 | 1.233593 | 0.576400 | 0.062* | |
| C25 | 0.5676 (3) | 1.17463 (19) | 0.45928 (13) | 0.0436 (5) | |
| H25 | 0.685829 | 1.214852 | 0.484499 | 0.052* | |
| Cl1 | 0.16918 (5) | 0.91117 (4) | 0.07387 (3) | 0.02965 (12) |
Atomic displacement parameters (Å2)
| U11 | U22 | U33 | U12 | U13 | U23 | |
| O1 | 0.0214 (5) | 0.0315 (6) | 0.0325 (6) | 0.0094 (5) | 0.0034 (5) | 0.0009 (5) |
| N1 | 0.0193 (6) | 0.0251 (7) | 0.0233 (8) | 0.0067 (5) | 0.0005 (6) | −0.0016 (6) |
| N2 | 0.0166 (6) | 0.0211 (7) | 0.0291 (7) | 0.0082 (5) | 0.0028 (5) | −0.0021 (5) |
| N3 | 0.0168 (6) | 0.0190 (6) | 0.0284 (7) | 0.0063 (5) | 0.0026 (5) | 0.0015 (5) |
| N4 | 0.0338 (8) | 0.0276 (8) | 0.0486 (9) | 0.0042 (6) | −0.0047 (7) | −0.0027 (7) |
| C1 | 0.0190 (7) | 0.0168 (7) | 0.0326 (9) | 0.0045 (6) | 0.0034 (7) | 0.0017 (6) |
| C2 | 0.0223 (8) | 0.0363 (10) | 0.0332 (9) | 0.0056 (7) | −0.0024 (7) | −0.0034 (8) |
| C3 | 0.0324 (9) | 0.0379 (10) | 0.0365 (10) | 0.0046 (8) | −0.0038 (8) | −0.0151 (8) |
| C4 | 0.0314 (9) | 0.0255 (9) | 0.0318 (9) | 0.0100 (7) | 0.0002 (7) | −0.0055 (7) |
| C5 | 0.0440 (10) | 0.0421 (11) | 0.0304 (10) | 0.0168 (8) | 0.0004 (8) | −0.0131 (8) |
| C6 | 0.0448 (11) | 0.0452 (11) | 0.0306 (10) | 0.0196 (9) | 0.0129 (8) | −0.0062 (8) |
| C7 | 0.0277 (8) | 0.0314 (9) | 0.0346 (9) | 0.0120 (7) | 0.0074 (7) | −0.0004 (7) |
| C8 | 0.0253 (8) | 0.0197 (8) | 0.0259 (8) | 0.0109 (6) | 0.0035 (7) | 0.0009 (6) |
| C9 | 0.0253 (8) | 0.0182 (7) | 0.0255 (8) | 0.0089 (6) | 0.0037 (7) | −0.0004 (6) |
| C10 | 0.0182 (7) | 0.0260 (8) | 0.0366 (9) | 0.0093 (6) | 0.0059 (7) | −0.0005 (7) |
| C11 | 0.0184 (7) | 0.0223 (8) | 0.0383 (10) | 0.0105 (6) | 0.0021 (7) | −0.0009 (7) |
| C12 | 0.0152 (7) | 0.0248 (8) | 0.0313 (9) | 0.0079 (6) | 0.0029 (6) | −0.0023 (6) |
| C13 | 0.0183 (7) | 0.0217 (8) | 0.0302 (9) | 0.0091 (6) | 0.0007 (6) | −0.0018 (6) |
| C14 | 0.0217 (8) | 0.0273 (9) | 0.0311 (9) | 0.0092 (6) | −0.0006 (7) | 0.0032 (7) |
| C15 | 0.0261 (8) | 0.0246 (8) | 0.0242 (8) | 0.0085 (6) | −0.0037 (7) | 0.0011 (6) |
| C16 | 0.0281 (8) | 0.0232 (8) | 0.0267 (9) | 0.0063 (6) | −0.0019 (7) | 0.0001 (7) |
| C17 | 0.0379 (9) | 0.0271 (9) | 0.0216 (9) | 0.0144 (7) | −0.0041 (7) | −0.0001 (7) |
| C18 | 0.0448 (10) | 0.0227 (9) | 0.0325 (10) | 0.0099 (7) | −0.0103 (8) | −0.0043 (7) |
| C19 | 0.0278 (9) | 0.0305 (10) | 0.0404 (10) | 0.0057 (7) | −0.0010 (8) | −0.0003 (8) |
| C20 | 0.0492 (11) | 0.0253 (9) | 0.0252 (9) | 0.0179 (8) | −0.0002 (8) | 0.0013 (7) |
| C21 | 0.0497 (11) | 0.0336 (10) | 0.0296 (9) | 0.0197 (8) | 0.0049 (8) | 0.0003 (7) |
| C22 | 0.0534 (12) | 0.0526 (12) | 0.0471 (12) | 0.0299 (10) | 0.0099 (10) | 0.0062 (10) |
| C23 | 0.0860 (17) | 0.0597 (14) | 0.0428 (13) | 0.0481 (13) | 0.0242 (12) | 0.0077 (10) |
| C24 | 0.0872 (17) | 0.0492 (12) | 0.0286 (11) | 0.0380 (12) | 0.0067 (11) | −0.0037 (9) |
| C25 | 0.0672 (13) | 0.0374 (10) | 0.0294 (10) | 0.0259 (9) | −0.0023 (9) | −0.0025 (8) |
| Cl1 | 0.02283 (19) | 0.0261 (2) | 0.0381 (2) | 0.00758 (15) | 0.00489 (17) | 0.00481 (17) |
Geometric parameters (Å, º)
| O1—C1 | 1.2298 (17) | C10—H10B | 0.9900 |
| N1—C1 | 1.3562 (19) | C11—H11A | 0.9900 |
| N1—C9 | 1.4136 (19) | C11—H11B | 0.9900 |
| N1—H1N | 0.852 (17) | C12—C13 | 1.515 (2) |
| N2—C8 | 1.4233 (19) | C12—H12A | 0.9900 |
| N2—C10 | 1.4665 (18) | C12—H12B | 0.9900 |
| N2—C13 | 1.4832 (19) | C13—H13A | 0.9900 |
| N3—C14 | 1.4981 (19) | C13—H13B | 0.9900 |
| N3—C12 | 1.5002 (17) | C14—C15 | 1.507 (2) |
| N3—C11 | 1.5031 (19) | C14—H14A | 0.9900 |
| N3—H3N | 0.967 (18) | C14—H14B | 0.9900 |
| N4—C18 | 1.336 (2) | C15—C16 | 1.390 (2) |
| N4—C19 | 1.340 (2) | C15—C19 | 1.395 (2) |
| C1—C2 | 1.498 (2) | C16—C17 | 1.394 (2) |
| C2—C3 | 1.527 (2) | C16—H16 | 0.9500 |
| C2—H2A | 0.9900 | C17—C18 | 1.394 (2) |
| C2—H2B | 0.9900 | C17—C20 | 1.484 (2) |
| C3—C4 | 1.507 (2) | C18—H18 | 0.9500 |
| C3—H3A | 0.9900 | C19—H19 | 0.9500 |
| C3—H3B | 0.9900 | C20—C25 | 1.395 (2) |
| C4—C5 | 1.381 (2) | C20—C21 | 1.393 (2) |
| C4—C9 | 1.400 (2) | C21—C22 | 1.387 (2) |
| C5—C6 | 1.387 (2) | C21—H21 | 0.9500 |
| C5—H5 | 0.9500 | C22—C23 | 1.389 (3) |
| C6—C7 | 1.384 (2) | C22—H22 | 0.9500 |
| C6—H6 | 0.9500 | C23—C24 | 1.382 (3) |
| C7—C8 | 1.395 (2) | C23—H23 | 0.9500 |
| C7—H7 | 0.9500 | C24—C25 | 1.380 (3) |
| C8—C9 | 1.415 (2) | C24—H24 | 0.9500 |
| C10—C11 | 1.496 (2) | C25—H25 | 0.9500 |
| C10—H10A | 0.9900 | ||
| C1—N1—C9 | 123.74 (14) | C10—C11—H11B | 109.3 |
| C1—N1—H1N | 112.8 (11) | N3—C11—H11B | 109.3 |
| C9—N1—H1N | 123.5 (11) | H11A—C11—H11B | 107.9 |
| C8—N2—C10 | 114.51 (12) | N3—C12—C13 | 112.12 (12) |
| C8—N2—C13 | 118.19 (12) | N3—C12—H12A | 109.2 |
| C10—N2—C13 | 108.27 (11) | C13—C12—H12A | 109.2 |
| C14—N3—C12 | 112.69 (12) | N3—C12—H12B | 109.2 |
| C14—N3—C11 | 108.66 (12) | C13—C12—H12B | 109.2 |
| C12—N3—C11 | 110.14 (11) | H12A—C12—H12B | 107.9 |
| C14—N3—H3N | 109.2 (11) | N2—C13—C12 | 109.53 (12) |
| C12—N3—H3N | 108.5 (11) | N2—C13—H13A | 109.8 |
| C11—N3—H3N | 107.6 (11) | C12—C13—H13A | 109.8 |
| C18—N4—C19 | 116.51 (14) | N2—C13—H13B | 109.8 |
| O1—C1—N1 | 122.03 (14) | C12—C13—H13B | 109.8 |
| O1—C1—C2 | 121.99 (13) | H13A—C13—H13B | 108.2 |
| N1—C1—C2 | 115.97 (14) | N3—C14—C15 | 115.00 (13) |
| C1—C2—C3 | 110.04 (14) | N3—C14—H14A | 108.5 |
| C1—C2—H2A | 109.7 | C15—C14—H14A | 108.5 |
| C3—C2—H2A | 109.7 | N3—C14—H14B | 108.5 |
| C1—C2—H2B | 109.7 | C15—C14—H14B | 108.5 |
| C3—C2—H2B | 109.7 | H14A—C14—H14B | 107.5 |
| H2A—C2—H2B | 108.2 | C16—C15—C19 | 117.83 (15) |
| C4—C3—C2 | 109.40 (13) | C16—C15—C14 | 122.94 (13) |
| C4—C3—H3A | 109.8 | C19—C15—C14 | 119.00 (15) |
| C2—C3—H3A | 109.8 | C15—C16—C17 | 120.04 (14) |
| C4—C3—H3B | 109.8 | C15—C16—H16 | 120.0 |
| C2—C3—H3B | 109.8 | C17—C16—H16 | 120.0 |
| H3A—C3—H3B | 108.2 | C18—C17—C16 | 116.57 (15) |
| C5—C4—C9 | 119.99 (15) | C18—C17—C20 | 121.22 (15) |
| C5—C4—C3 | 122.79 (15) | C16—C17—C20 | 122.21 (14) |
| C9—C4—C3 | 117.22 (14) | N4—C18—C17 | 125.19 (16) |
| C4—C5—C6 | 120.19 (16) | N4—C18—H18 | 117.4 |
| C4—C5—H5 | 119.9 | C17—C18—H18 | 117.4 |
| C6—C5—H5 | 119.9 | N4—C19—C15 | 123.81 (17) |
| C7—C6—C5 | 119.99 (15) | N4—C19—H19 | 118.1 |
| C7—C6—H6 | 120.0 | C15—C19—H19 | 118.1 |
| C5—C6—H6 | 120.0 | C25—C20—C21 | 118.47 (17) |
| C6—C7—C8 | 121.68 (14) | C25—C20—C17 | 120.38 (17) |
| C6—C7—H7 | 119.2 | C21—C20—C17 | 121.13 (15) |
| C8—C7—H7 | 119.2 | C22—C21—C20 | 120.67 (18) |
| C7—C8—N2 | 121.99 (13) | C22—C21—H21 | 119.7 |
| C7—C8—C9 | 117.59 (14) | C20—C21—H21 | 119.7 |
| N2—C8—C9 | 120.26 (13) | C21—C22—C23 | 120.2 (2) |
| C4—C9—N1 | 118.14 (13) | C21—C22—H22 | 119.9 |
| C4—C9—C8 | 120.56 (14) | C23—C22—H22 | 119.9 |
| N1—C9—C8 | 121.30 (13) | C24—C23—C22 | 119.25 (19) |
| N2—C10—C11 | 110.45 (12) | C24—C23—H23 | 120.4 |
| N2—C10—H10A | 109.6 | C22—C23—H23 | 120.4 |
| C11—C10—H10A | 109.6 | C25—C24—C23 | 120.72 (19) |
| N2—C10—H10B | 109.6 | C25—C24—H24 | 119.6 |
| C11—C10—H10B | 109.6 | C23—C24—H24 | 119.6 |
| H10A—C10—H10B | 108.1 | C24—C25—C20 | 120.67 (19) |
| C10—C11—N3 | 111.72 (13) | C24—C25—H25 | 119.7 |
| C10—C11—H11A | 109.3 | C20—C25—H25 | 119.7 |
| N3—C11—H11A | 109.3 | ||
| C9—N1—C1—O1 | −176.62 (13) | C14—N3—C12—C13 | −172.97 (12) |
| C9—N1—C1—C2 | 2.4 (2) | C11—N3—C12—C13 | −51.46 (16) |
| O1—C1—C2—C3 | −143.54 (15) | C8—N2—C13—C12 | 165.68 (11) |
| N1—C1—C2—C3 | 37.46 (18) | C10—N2—C13—C12 | −62.04 (14) |
| C1—C2—C3—C4 | −56.18 (18) | N3—C12—C13—N2 | 57.34 (15) |
| C2—C3—C4—C5 | −141.79 (17) | C12—N3—C14—C15 | −69.10 (16) |
| C2—C3—C4—C9 | 38.3 (2) | C11—N3—C14—C15 | 168.56 (12) |
| C9—C4—C5—C6 | 0.5 (3) | N3—C14—C15—C16 | 95.52 (17) |
| C3—C4—C5—C6 | −179.36 (17) | N3—C14—C15—C19 | −90.00 (17) |
| C4—C5—C6—C7 | −0.7 (3) | C19—C15—C16—C17 | −1.5 (2) |
| C5—C6—C7—C8 | 0.8 (3) | C14—C15—C16—C17 | 173.04 (14) |
| C6—C7—C8—N2 | 174.79 (15) | C15—C16—C17—C18 | 0.1 (2) |
| C6—C7—C8—C9 | −0.5 (2) | C15—C16—C17—C20 | −179.93 (14) |
| C10—N2—C8—C7 | −12.7 (2) | C19—N4—C18—C17 | −1.9 (3) |
| C13—N2—C8—C7 | 116.78 (16) | C16—C17—C18—N4 | 1.7 (2) |
| C10—N2—C8—C9 | 162.54 (13) | C20—C17—C18—N4 | −178.24 (15) |
| C13—N2—C8—C9 | −68.01 (17) | C18—N4—C19—C15 | 0.4 (3) |
| C5—C4—C9—N1 | −179.77 (15) | C16—C15—C19—N4 | 1.3 (3) |
| C3—C4—C9—N1 | 0.1 (2) | C14—C15—C19—N4 | −173.47 (16) |
| C5—C4—C9—C8 | −0.3 (2) | C18—C17—C20—C25 | −39.3 (2) |
| C3—C4—C9—C8 | 179.60 (15) | C16—C17—C20—C25 | 140.79 (17) |
| C1—N1—C9—C4 | −23.1 (2) | C18—C17—C20—C21 | 139.46 (17) |
| C1—N1—C9—C8 | 157.43 (14) | C16—C17—C20—C21 | −40.5 (2) |
| C7—C8—C9—C4 | 0.3 (2) | C25—C20—C21—C22 | −1.1 (2) |
| N2—C8—C9—C4 | −175.13 (14) | C17—C20—C21—C22 | −179.88 (15) |
| C7—C8—C9—N1 | 179.77 (14) | C20—C21—C22—C23 | 1.1 (3) |
| N2—C8—C9—N1 | 4.4 (2) | C21—C22—C23—C24 | −0.4 (3) |
| C8—N2—C10—C11 | −162.59 (12) | C22—C23—C24—C25 | −0.3 (3) |
| C13—N2—C10—C11 | 63.20 (15) | C23—C24—C25—C20 | 0.2 (3) |
| N2—C10—C11—N3 | −58.73 (16) | C21—C20—C25—C24 | 0.5 (3) |
| C14—N3—C11—C10 | 175.64 (11) | C17—C20—C25—C24 | 179.25 (15) |
| C12—N3—C11—C10 | 51.76 (15) |
Hydrogen-bond geometry (Å, º)
Cg is the centroid of the C4–C9 ring.
| D—H···A | D—H | H···A | D···A | D—H···A |
| N1—H1N···O1i | 0.85 (2) | 2.01 (2) | 2.844 (2) | 168 (2) |
| N3—H3N···Cl1ii | 0.97 (2) | 2.12 (2) | 3.065 (1) | 167 (2) |
| C10—H10B···O1iii | 0.99 | 2.40 | 3.151 (2) | 132 |
| C11—H11A···Cl1iii | 0.99 | 2.80 | 3.668 (2) | 147 |
| C12—H12A···Cl1 | 0.99 | 2.81 | 3.520 (2) | 129 |
| C12—H12B···O1i | 0.99 | 2.26 | 3.123 (2) | 144 |
| C13—H13A···N1 | 0.99 | 2.53 | 3.138 (2) | 120 |
| C14—H14A···Cl1iii | 0.99 | 2.71 | 3.585 (2) | 147 |
| C21—H21···Cl1 | 0.95 | 2.83 | 3.757 (2) | 165 |
| C18—H18···Cgii | 0.95 | 2.83 | 3.487 (2) | 127 |
Symmetry codes: (i) −x, −y+1, −z; (ii) −x+1, −y+2, −z; (iii) x+1, y, z.
Funding Statement
This work was funded by King Fahd University of Petroleum and Minerals, Dahran, Saudia Arabia; University of Neuchâtel grant .
References
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Associated Data
This section collects any data citations, data availability statements, or supplementary materials included in this article.
Supplementary Materials
Crystal structure: contains datablock(s) I, Global. DOI: 10.1107/S2056989021000979/hb7965sup1.cif
Structure factors: contains datablock(s) I. DOI: 10.1107/S2056989021000979/hb7965Isup2.hkl
Details concerning structure II.HCl. DOI: 10.1107/S2056989021000979/hb7965sup3.pdf
CCDC reference: 2059142
Additional supporting information: crystallographic information; 3D view; checkCIF report