Chlorido[4-chloro-2-(pyridin-2-yl­methyl­imino­meth­yl)phenolato-κ³ N,N′,O]copper(II)

Abstract

In the title complex, [Cu(C₁₃H₁₀ClN₂O)Cl], the Cu^II ion is coordinated by one O atom and two N atoms of the tridentate Schiff base ligand and one chloride ion, forming a slightly distorted square-planar geometry. Weak Cu⋯Cl inter­actions [2.793 (5) Å] result in the formation of a chain along the a axis.

Related literature  

For background to the use of unsymmetrical tridentate Schiff base ligands and their hydrogenated derivatives in coordin­ation chemistry for the assembly of alkoxo-or phenoxo-bridged clusters and polymers, see: Koizumi et al. (2005 ▶); Boskovic et al. (2003 ▶); Oshiob et al. (2005 ▶). For related structures, see: Bluhm et al. (2003 ▶); Kannappan et al. (2005 ▶); Sun et al. (2005 ▶).

Experimental  

Crystal data  

• [Cu(C₁₃H₁₀ClN₂O)Cl]

• M _r = 344.67

• Orthorhombic,

• a = 7.7975 (11) Å

• b = 13.638 (2) Å

• c = 24.854 (4) Å

• V = 2643.1 (7) ų

• Z = 8

• Mo Kα radiation

• μ = 2.05 mm⁻¹

• T = 293 K

• 0.15 × 0.12 × 0.09 mm

Data collection  

• Bruker APEXII diffractometer

• Absorption correction: multi-scan (SADABS; Sheldrick, 2008a ▶) T _min = 0.749, T _max = 0.837

• 12098 measured reflections

• 2325 independent reflections

• 1580 reflections with I > 2σ(I)

• R _int = 0.053

Refinement  

• R[F ² > 2σ(F ²)] = 0.038

• wR(F ²) = 0.098

• S = 1.02

• 2325 reflections

• 172 parameters

• H-atom parameters constrained

• Δρ_max = 0.29 e Å⁻³

• Δρ_min = −0.33 e Å⁻³

Data collection: APEX2 (Bruker, 2004 ▶); cell refinement: SAINT-Plus (Bruker, 2001 ▶); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008b ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008b ▶); molecular graphics: SHELXTL (Sheldrick, 2008b ▶); software used to prepare material for publication: SHELXTL.

Supplementary Material

Additional supplementary materials: crystallographic information; 3D view; checkCIF report

supplementary crystallographic information

Comment

Schiff base complexes have all along attracted much attention due to their interesting structures and wide potential applications. Recently, the relative flexible unsymmetrical tridentate Schiff base ligands and their hydrogenerated derivatives have been introduced into the coordination chemistry to assemble alkoxo-or phenoxo-bridged clusters and polymers with beautiful molecular structures and interesting magnetic properties (Koizumi et al., 2005; Boskovic et al., 2003; Oshiob et al., 2005). Herein, we report the structure of a new copper complex based on an unsymmetric tridentate Schiff base ligand.

The molecular structure of title compound is shown in Fig. 1. The Cu ion is four coordinate forming a slightly distorted square planar coordination sphere, in which three positions are occupied by two N atoms and one O atom from the asymmetric tridentate Schiff base ligand, and the other one coming from a coordinated chloride ion. The CuN₂O unit is located in a well plane with the mean deviation of 0.0035 (3) Å, while the chloro ion is obvious out of the above plane with deviation value 0.1249 (5) Å. The bond distances of Cu—O, Cu—N and Cu—Cl are in the normal range compared to the reported complexes containing the analogous unsymmetrical tridentate Schiff base ligands (Bluhm et al., 2003; Kannappan, et al., 2005; Sun et al., 2005). It is worth noting that the asymmetric unit can be linked into one dimensional double chain structure by the weak Cu···Cl intermolecular interactions.

Experimental

The Schiff base was obtained by condensation 2-(aminomethyl)pyridine and 5-chloro-2-hydroxy-benzaldehyde with the ratio 1:1 in methanol. The synthesis of the title complex was carried out by the reaction of CuCl₂.6H₂O and the Schiff-base ligand (1:1, molar ratio) in methanol under the stirring condition at room temperature. The filtrated solution was allowed to partial evaporation and blue single crystals suitable for X-ray diffraction were afforded with the yield about 60% sevral days later.

Refinement

All the H atoms bonded to the C atoms were placed using the HFIX commands in SHELXL-97, with C—H distances of 0.93 and 0.96 Å, and were allowed for as riding atoms with U_iso(H) = 1.2U_eq(C).

Figures

Fig. 1.

View of the title compound with the atom-labelling scheme Displacement ellipsoids are drawn at the 30% probability level. All H-atoms are omitted for clarity.

Crystal data

[Cu(C13H10ClN2O)Cl]	F(000) = 1384
Mr = 344.67	Dx = 1.732 Mg m−3
Orthorhombic, Pbca	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ac 2ab	Cell parameters from 1346 reflections
a = 7.7975 (11) Å	θ = 2.8–26.3°
b = 13.638 (2) Å	µ = 2.05 mm−1
c = 24.854 (4) Å	T = 293 K
V = 2643.1 (7) Å3	Block, blue
Z = 8	0.15 × 0.12 × 0.09 mm

Data collection

Bruker APEXII diffractometer	2325 independent reflections
Radiation source: fine-focus sealed tube	1580 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.053
φ and ω scans	θmax = 25.0°, θmin = 1.6°
Absorption correction: multi-scan (SADABS; Sheldrick, 2008a)	h = −9→9
Tmin = 0.749, Tmax = 0.837	k = −14→16
12098 measured reflections	l = −27→29

Refinement

Refinement on F2	Primary atom site location: structure-invariant direct methods
Least-squares matrix: full	Secondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.038	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.098	H-atom parameters constrained
S = 1.02	w = 1/[σ2(Fo2) + (0.0418P)2 + 1.4463P] where P = (Fo2 + 2Fc2)/3
2325 reflections	(Δ/σ)max = 0.006
172 parameters	Δρmax = 0.29 e Å−3
0 restraints	Δρmin = −0.33 e Å−3

Special details

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.

Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Ų)

	x	y	z	Uiso*/Ueq
Cu1	0.10863 (6)	0.97468 (3)	0.248134 (18)	0.03844 (17)
Cl1	0.43484 (19)	0.64978 (10)	0.45552 (5)	0.0755 (4)
Cl2	−0.09768 (12)	1.09117 (7)	0.25915 (4)	0.0441 (3)
O1	0.1221 (4)	0.9585 (2)	0.32421 (11)	0.0504 (8)
N1	0.2305 (4)	0.8517 (2)	0.23433 (11)	0.0349 (7)
N2	0.1071 (4)	0.9820 (2)	0.16720 (13)	0.0407 (8)
C1	0.2746 (5)	0.8043 (3)	0.32695 (15)	0.0358 (9)
C2	0.1939 (5)	0.8871 (3)	0.35062 (16)	0.0399 (10)
C3	0.1894 (6)	0.8900 (3)	0.40777 (17)	0.0524 (12)
H3	0.1355	0.9426	0.4246	0.063*
C4	0.2610 (6)	0.8186 (3)	0.43873 (17)	0.0564 (12)
H4	0.2573	0.8231	0.4760	0.068*
C5	0.3394 (5)	0.7391 (3)	0.41436 (17)	0.0472 (11)
C6	0.3446 (5)	0.7312 (3)	0.36013 (16)	0.0414 (10)
H6	0.3953	0.6764	0.3446	0.050*
C7	0.2900 (5)	0.7931 (3)	0.27008 (15)	0.0343 (9)
H7	0.3488	0.7381	0.2578	0.041*
C8	0.1920 (5)	0.9084 (3)	0.14267 (15)	0.0392 (10)
C9	0.2162 (6)	0.9091 (3)	0.08752 (17)	0.0544 (12)
H9	0.2736	0.8576	0.0709	0.065*
C10	0.1555 (6)	0.9855 (4)	0.05748 (19)	0.0655 (14)
H10	0.1727	0.9868	0.0205	0.079*
C11	0.0687 (6)	1.0606 (4)	0.08264 (19)	0.0646 (13)
H11	0.0268	1.1134	0.0630	0.077*
C12	0.0453 (6)	1.0559 (3)	0.13728 (17)	0.0535 (12)
H12	−0.0157	1.1057	0.1542	0.064*
C13	0.2559 (5)	0.8271 (3)	0.17772 (14)	0.0407 (10)
H13A	0.1948	0.7671	0.1693	0.049*
H13B	0.3770	0.8163	0.1709	0.049*

Atomic displacement parameters (Ų)

	U11	U22	U33	U12	U13	U23
Cu1	0.0423 (3)	0.0278 (3)	0.0452 (3)	0.0030 (2)	0.0022 (3)	−0.0004 (2)
Cl1	0.1064 (11)	0.0612 (8)	0.0589 (7)	0.0109 (8)	−0.0199 (7)	0.0129 (6)
Cl2	0.0358 (5)	0.0300 (5)	0.0665 (7)	0.0016 (4)	0.0006 (5)	−0.0014 (5)
O1	0.065 (2)	0.0367 (17)	0.0496 (17)	0.0140 (15)	0.0072 (15)	0.0007 (14)
N1	0.0397 (19)	0.0258 (17)	0.0392 (18)	−0.0030 (15)	0.0042 (15)	−0.0022 (14)
N2	0.040 (2)	0.0336 (19)	0.0484 (19)	−0.0033 (17)	−0.0025 (16)	0.0041 (16)
C1	0.034 (2)	0.028 (2)	0.045 (2)	−0.0045 (17)	0.0006 (18)	−0.0028 (18)
C2	0.041 (2)	0.032 (2)	0.047 (2)	−0.0053 (19)	0.004 (2)	−0.0024 (19)
C3	0.065 (3)	0.044 (3)	0.048 (3)	0.007 (2)	0.006 (2)	−0.007 (2)
C4	0.070 (3)	0.058 (3)	0.042 (2)	−0.005 (3)	0.002 (2)	−0.003 (2)
C5	0.052 (3)	0.041 (3)	0.048 (3)	−0.003 (2)	−0.004 (2)	0.003 (2)
C6	0.044 (3)	0.030 (2)	0.050 (3)	−0.0025 (18)	−0.0013 (19)	−0.003 (2)
C7	0.031 (2)	0.024 (2)	0.048 (2)	−0.0001 (17)	0.0022 (18)	−0.0048 (18)
C8	0.038 (2)	0.035 (2)	0.044 (2)	−0.0071 (19)	−0.0029 (19)	0.000 (2)
C9	0.063 (3)	0.051 (3)	0.049 (3)	0.000 (2)	0.000 (2)	−0.002 (2)
C10	0.078 (4)	0.074 (4)	0.045 (3)	−0.004 (3)	−0.005 (2)	0.009 (3)
C11	0.074 (4)	0.060 (3)	0.059 (3)	0.002 (3)	−0.008 (3)	0.016 (3)
C12	0.057 (3)	0.045 (3)	0.058 (3)	0.001 (2)	−0.001 (2)	0.004 (2)
C13	0.044 (3)	0.036 (2)	0.042 (2)	0.0012 (19)	0.001 (2)	−0.0045 (18)

Geometric parameters (Å, º)

Cu1—O1	1.907 (3)	C4—C5	1.384 (6)
Cu1—N1	1.958 (3)	C4—H4	0.9300
Cu1—N2	2.014 (3)	C5—C6	1.353 (5)
Cu1—Cl2	2.2775 (11)	C6—H6	0.9300
Cl1—C5	1.756 (4)	C7—H7	0.9300
O1—C2	1.300 (4)	C8—C9	1.383 (5)
N1—C7	1.282 (4)	C8—C13	1.495 (5)
N1—C13	1.460 (4)	C9—C10	1.367 (6)
N2—C12	1.342 (5)	C9—H9	0.9300
N2—C8	1.348 (5)	C10—C11	1.377 (6)
C1—C6	1.404 (5)	C10—H10	0.9300
C1—C2	1.421 (5)	C11—C12	1.372 (6)
C1—C7	1.427 (5)	C11—H11	0.9300
C2—C3	1.422 (5)	C12—H12	0.9300
C3—C4	1.362 (6)	C13—H13A	0.9700
C3—H3	0.9300	C13—H13B	0.9700
O1—Cu1—N1	92.74 (12)	C5—C6—C1	121.1 (4)
O1—Cu1—N2	175.25 (13)	C5—C6—H6	119.4
N1—Cu1—N2	82.55 (13)	C1—C6—H6	119.4
O1—Cu1—Cl2	90.03 (9)	N1—C7—C1	126.1 (4)
N1—Cu1—Cl2	164.03 (10)	N1—C7—H7	117.0
N2—Cu1—Cl2	94.67 (10)	C1—C7—H7	117.0
C2—O1—Cu1	127.7 (3)	N2—C8—C9	120.6 (4)
C7—N1—C13	118.4 (3)	N2—C8—C13	116.9 (3)
C7—N1—Cu1	126.0 (3)	C9—C8—C13	122.5 (4)
C13—N1—Cu1	115.6 (2)	C10—C9—C8	120.0 (4)
C12—N2—C8	119.0 (4)	C10—C9—H9	120.0
C12—N2—Cu1	126.4 (3)	C8—C9—H9	120.0
C8—N2—Cu1	114.3 (3)	C9—C10—C11	119.3 (5)
C6—C1—C2	119.6 (4)	C9—C10—H10	120.4
C6—C1—C7	118.2 (4)	C11—C10—H10	120.4
C2—C1—C7	122.2 (3)	C12—C11—C10	118.7 (5)
O1—C2—C1	125.2 (4)	C12—C11—H11	120.7
O1—C2—C3	118.2 (4)	C10—C11—H11	120.7
C1—C2—C3	116.5 (4)	N2—C12—C11	122.4 (4)
C4—C3—C2	122.3 (4)	N2—C12—H12	118.8
C4—C3—H3	118.8	C11—C12—H12	118.8
C2—C3—H3	118.8	N1—C13—C8	110.2 (3)
C3—C4—C5	119.6 (4)	N1—C13—H13A	109.6
C3—C4—H4	120.2	C8—C13—H13A	109.6
C5—C4—H4	120.2	N1—C13—H13B	109.6
C6—C5—C4	120.8 (4)	C8—C13—H13B	109.6
C6—C5—Cl1	120.8 (3)	H13A—C13—H13B	108.1
C4—C5—Cl1	118.4 (3)