Abstract
The title compound, C16H24Br2O, was synthesized from the reaction of β-himachalene (3,5,5,9-tetramethyl-2,4a,5,6,7,8-hexahydro-1H-benzocycloheptene), which was isolated from Atlas cedar (Cedrus atlantica). The asymmetric unit contains two independent molecules with similar conformations. Each molecule is built up from two fused seven-membered rings and an additional three-membered ring. In both molecules, one of the seven-membered rings has a chair conformation, whereas the other displays a screw-boat conformation.
Related literature
For background to β-himachalene, see: El Haib et al. (2011 ▶). For the reactivity of this sesquiterpene and its derivatives, see: El Jamili et al. (2002 ▶); Benharref et al. (2013 ▶); Oukhrib et al. (2013 ▶). For their potential antifungal activity against the phytopathogen Botrytis cinerea, see: Daoubi et al. (2004 ▶). For puckering parameters, see: Cremer & Pople (1975 ▶).
Experimental
Crystal data
C16H24Br2O
M r = 392.17
Triclinic,
a = 6.6550 (3) Å
b = 9.4142 (4) Å
c = 12.9389 (13) Å
α = 86.008 (6)°
β = 83.921 (6)°
γ = 89.511 (4)°
V = 804.13 (9) Å3
Z = 2
Mo Kα radiation
μ = 5.03 mm−1
T = 173 K
0.38 × 0.11 × 0.10 mm
Data collection
Agilent Xcalibur (Eos, Gemini ultra) diffractometer
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2012 ▶) T min = 0.670, T max = 1.00
11451 measured reflections
6327 independent reflections
5209 reflections with I > 2σ(I)
R int = 0.057
Refinement
R[F 2 > 2σ(F 2)] = 0.054
wR(F 2) = 0.119
S = 1.01
6327 reflections
351 parameters
3 restraints
H-atom parameters constrained
Δρmax = 0.77 e Å−3
Δρmin = −0.62 e Å−3
Absolute structure: Flack & Bernardinelli (2000 ▶), 3035 Friedel pairs
Absolute structure parameter: −0.017 (15)
Data collection: CrysAlis PRO (Agilent, 2012 ▶); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012 ▶); software used to prepare material for publication: publCIF (Westrip, 2010 ▶).
Supplementary Material
Crystal structure: contains datablock(s) I. DOI: 10.1107/S1600536814007351/bt6972sup1.cif
Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536814007351/bt6972Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536814007351/bt6972Isup3.cml
CCDC reference: 995040
Additional supporting information: crystallographic information; 3D view; checkCIF report
Acknowledgments
The authors thank the Unit of Support for Technical and Scientific Research (UATRS, CNRST) for the X-ray measurements
supplementary crystallographic information
1. Comment
Our work lies within the framework of the valorization of the most abundant essential oils in Morocco, such as the one from Cedrus atlantica. This oil is made up mainly (75%) of bicyclic sesquiterpenes hydrocarbons, among which is found β-himachalene (El Haib et al., 2011). The reactivity of this sesquiterpene and its derivatives has been studied extensively by our team in order to prepare new products having biological properties (El Jamili et al., 2002; Benharref et al., 2013; Oukhrib et al., 2013). Indeed, these compounds were tested, using the food poisoning technique, for their potential antifungal activity against phytopathogen Botrytis cinerea (Daoubi et al., 2004). In this work we present the crystal structure of the title compound. The asymmetric unit contains two independent molecules with almost identical conformations (Fig. 1). Each molecule is built up from two fused seven-membered rings, one having a chair conformation as indicated by the total puckering amplitude QT = 0.8469 (8) Å and spherical polar angle θ = 38.29 (6)° with φ2 = 126.14 (8)°, and φ3 = -139.18 (6)°, while the other shows a screw boat conformation, with QT = 1.0407 (8) Å, θ = 76.80 (4)°, φ2 = 153.32 (4)° and φ3 = 115.21 (2)° (Cremer & Pople, 1975). Owing to the presence of Br atoms, the absolute configuration could be fully confirmed, by refining the Flack parameter (Flack & Bernardinelli, 2000) as C1(R), C4(R), C6(S) and C7(R).
2. Experimental
To obtain the title compound, BF3—Et2O(1 mL) was added dropwise to a solution of (1S,2R,7R,8S,10R)-9,9-dibromo- 1α,2α-epoxy-2,6,6,10-tetramethyltricyclo[5.5.0.08,10]dodecane (1 g, 2.5 mmol) in 60 ml of dichloromethane at 195 K under nitrogen. The reaction mixture was stirred for two hours at a constant temperature of 195 K and left at ambient temperature for 24 h. Water (60 ml) was added in order to separate the two phases, and the organic phase was dried and concentrated. The residue obtained was chromatographed on silica-gel eluting with hexane-ethyl acetate (98/2), which allowed the isolation of pure(1S,6R,7S,9R)-12-acetyl-8,8-dibromo-5,5,9- trimethyltricyclo[4.4.0,17,9]decane in a yield of 20% (196 mg, 0.5 mmol). The title compound was recrystallized from its pentane solution.
3. Refinement
All H atoms were fixed geometrically and treated as riding with C—H = 0.96 Å (methyl), 0.97 Å (methylene), 0.98 Å (methine) with Uiso(H) = 1.2Ueq(methylene, methine) or Uiso(H) = 1.5Ueq(methyl). The methyl groups were allowed to rotate but not to tip.
Figures
Fig. 1.
: Molecular structure of the title compound with the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability. level. H atoms are represented as small spheres of arbitrary radii.
Crystal data
| C16H24Br2O | Z = 2 |
| Mr = 392.17 | F(000) = 396 |
| Triclinic, P1 | Dx = 1.620 Mg m−3 |
| Hall symbol: P 1 | Mo Kα radiation, λ = 0.71073 Å |
| a = 6.6550 (3) Å | Cell parameters from 2828 reflections |
| b = 9.4142 (4) Å | θ = 3.7–26.6° |
| c = 12.9389 (13) Å | µ = 5.03 mm−1 |
| α = 86.008 (6)° | T = 173 K |
| β = 83.921 (6)° | Needle, colourless |
| γ = 89.511 (4)° | 0.38 × 0.11 × 0.10 mm |
| V = 804.13 (9) Å3 |
Data collection
| Agilent Xcalibur (Eos, Gemini ultra) diffractometer | 6327 independent reflections |
| Radiation source: fine-focus sealed tube | 5209 reflections with I > 2σ(I) |
| Graphite monochromator | Rint = 0.057 |
| Detector resolution: 16.1978 pixels mm-1 | θmax = 26.4°, θmin = 3.2° |
| ω scans | h = −8→8 |
| Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2012) | k = −11→11 |
| Tmin = 0.670, Tmax = 1.00 | l = −16→16 |
| 11451 measured reflections |
Refinement
| Refinement on F2 | Secondary atom site location: difference Fourier map |
| Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
| R[F2 > 2σ(F2)] = 0.054 | H-atom parameters constrained |
| wR(F2) = 0.119 | w = 1/[σ2(Fo2) + (0.0447P)2] where P = (Fo2 + 2Fc2)/3 |
| S = 1.01 | (Δ/σ)max < 0.001 |
| 6327 reflections | Δρmax = 0.77 e Å−3 |
| 351 parameters | Δρmin = −0.62 e Å−3 |
| 3 restraints | Absolute structure: Flack & Bernardinelli (2000), 3035 Friedel pairs |
| Primary atom site location: structure-invariant direct methods | Absolute structure parameter: −0.017 (15) |
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 (Å2)
| x | y | z | Uiso*/Ueq | ||
| C1 | 0.5880 (12) | −0.1550 (8) | 1.2375 (6) | 0.0276 (18) | |
| C2 | 0.5505 (13) | −0.0914 (9) | 1.3464 (6) | 0.034 (2) | |
| H2A | 0.4417 | −0.1471 | 1.3886 | 0.040* | |
| H2B | 0.6748 | −0.1053 | 1.3818 | 0.040* | |
| C3 | 0.4926 (12) | 0.0666 (9) | 1.3462 (7) | 0.028 (2) | |
| H3A | 0.4717 | 0.0941 | 1.4191 | 0.034* | |
| H3B | 0.6059 | 0.1241 | 1.3098 | 0.034* | |
| C4 | 0.3007 (11) | 0.1013 (8) | 1.2934 (6) | 0.0252 (18) | |
| C5 | 0.2942 (11) | 0.2374 (8) | 1.2238 (6) | 0.0225 (17) | |
| C6 | 0.3148 (11) | 0.0978 (7) | 1.1734 (6) | 0.0191 (17) | |
| H6 | 0.1873 | 0.0660 | 1.1475 | 0.023* | |
| C7 | 0.5057 (11) | 0.0591 (8) | 1.1050 (6) | 0.0226 (17) | |
| H7 | 0.5764 | 0.1510 | 1.0817 | 0.027* | |
| C8 | 0.4504 (11) | −0.0078 (8) | 1.0021 (6) | 0.0275 (18) | |
| C9 | 0.3174 (14) | −0.1435 (8) | 1.0270 (7) | 0.033 (2) | |
| H9A | 0.1841 | −0.1137 | 1.0599 | 0.039* | |
| H9B | 0.2948 | −0.1823 | 0.9600 | 0.039* | |
| C10 | 0.3944 (13) | −0.2635 (8) | 1.0963 (7) | 0.032 (2) | |
| H10A | 0.5336 | −0.2882 | 1.0683 | 0.039* | |
| H10B | 0.3086 | −0.3484 | 1.0942 | 0.039* | |
| C11 | 0.3955 (12) | −0.2268 (8) | 1.2106 (6) | 0.0281 (19) | |
| H11A | 0.2794 | −0.1633 | 1.2280 | 0.034* | |
| H11B | 0.3738 | −0.3158 | 1.2557 | 0.034* | |
| C12 | 0.6585 (11) | −0.0347 (8) | 1.1572 (6) | 0.0221 (17) | |
| C13 | 0.7592 (14) | −0.2668 (10) | 1.2418 (8) | 0.039 (2) | |
| H13A | 0.7752 | −0.3149 | 1.1767 | 0.059* | |
| H13B | 0.7249 | −0.3370 | 1.3004 | 0.059* | |
| H13C | 0.8859 | −0.2193 | 1.2510 | 0.059* | |
| C14 | 0.6448 (14) | −0.0429 (10) | 0.9350 (6) | 0.037 (2) | |
| H14A | 0.6112 | −0.0806 | 0.8703 | 0.056* | |
| H14B | 0.7220 | −0.1143 | 0.9732 | 0.056* | |
| H14C | 0.7259 | 0.0437 | 0.9186 | 0.056* | |
| C15 | 0.3312 (14) | 0.1068 (9) | 0.9411 (6) | 0.031 (2) | |
| H15A | 0.3025 | 0.0710 | 0.8748 | 0.046* | |
| H15B | 0.4121 | 0.1939 | 0.9274 | 0.046* | |
| H15C | 0.2038 | 0.1277 | 0.9825 | 0.046* | |
| C16 | 0.1080 (12) | 0.0472 (9) | 1.3566 (7) | 0.037 (2) | |
| H16A | 0.0519 | 0.1213 | 1.4010 | 0.055* | |
| H16B | 0.1382 | −0.0379 | 1.4004 | 0.055* | |
| H16C | 0.0094 | 0.0233 | 1.3094 | 0.055* | |
| O1 | 0.8370 (8) | −0.0058 (6) | 1.1385 (5) | 0.0370 (15) | |
| Br1 | 0.51009 (11) | 0.37150 (8) | 1.21049 (7) | 0.0329 (3) | |
| Br2 | 0.04085 (11) | 0.33708 (9) | 1.21682 (7) | 0.0376 (3) | |
| C1A | 0.2236 (11) | 0.6190 (8) | 0.6230 (6) | 0.0250 (17) | |
| C2A | 0.2439 (12) | 0.5548 (8) | 0.5146 (6) | 0.0284 (19) | |
| H2C | 0.1584 | 0.6115 | 0.4690 | 0.034* | |
| H2D | 0.3858 | 0.5664 | 0.4836 | 0.034* | |
| C3A | 0.1869 (11) | 0.3985 (9) | 0.5135 (7) | 0.024 (2) | |
| H3C | 0.2845 | 0.3398 | 0.5505 | 0.029* | |
| H3D | 0.1994 | 0.3720 | 0.4403 | 0.029* | |
| C4A | −0.0271 (11) | 0.3624 (8) | 0.5636 (6) | 0.0237 (17) | |
| C5A | −0.0676 (11) | 0.2274 (8) | 0.6295 (6) | 0.0208 (17) | |
| C6A | −0.0769 (11) | 0.3672 (7) | 0.6818 (6) | 0.0193 (16) | |
| H6A1 | −0.2177 | 0.3998 | 0.7029 | 0.023* | |
| C7A | 0.0724 (11) | 0.4048 (7) | 0.7548 (6) | 0.0208 (16) | |
| H7A1 | 0.1292 | 0.3125 | 0.7819 | 0.025* | |
| C8A | −0.0317 (11) | 0.4772 (7) | 0.8529 (5) | 0.0233 (17) | |
| C9A | −0.1548 (13) | 0.6092 (8) | 0.8239 (6) | 0.027 (2) | |
| H9A1 | −0.2120 | 0.6492 | 0.8895 | 0.032* | |
| H9A2 | −0.2699 | 0.5776 | 0.7887 | 0.032* | |
| C10A | −0.0473 (13) | 0.7314 (8) | 0.7539 (6) | 0.034 (2) | |
| H10C | −0.1388 | 0.8148 | 0.7518 | 0.040* | |
| H10D | 0.0745 | 0.7597 | 0.7852 | 0.040* | |
| C11A | 0.0146 (11) | 0.6919 (8) | 0.6438 (6) | 0.0258 (18) | |
| H11C | 0.0137 | 0.7796 | 0.5969 | 0.031* | |
| H11D | −0.0896 | 0.6275 | 0.6240 | 0.031* | |
| C12A | 0.2523 (11) | 0.4925 (7) | 0.7042 (6) | 0.0237 (17) | |
| C13A | 0.3950 (13) | 0.7266 (9) | 0.6268 (7) | 0.035 (2) | |
| H13D | 0.3753 | 0.8098 | 0.5791 | 0.053* | |
| H13E | 0.5252 | 0.6818 | 0.6059 | 0.053* | |
| H13F | 0.3939 | 0.7566 | 0.6979 | 0.053* | |
| C14A | −0.1763 (13) | 0.3701 (8) | 0.9151 (7) | 0.032 (2) | |
| H14D | −0.2433 | 0.4139 | 0.9761 | 0.049* | |
| H14E | −0.1004 | 0.2861 | 0.9378 | 0.049* | |
| H14F | −0.2782 | 0.3416 | 0.8711 | 0.049* | |
| C15A | 0.1302 (13) | 0.5154 (8) | 0.9242 (6) | 0.0308 (19) | |
| H15D | 0.2236 | 0.5859 | 0.8868 | 0.046* | |
| H15E | 0.2053 | 0.4294 | 0.9437 | 0.046* | |
| H15F | 0.0639 | 0.5550 | 0.9871 | 0.046* | |
| C16A | −0.1904 (12) | 0.4126 (9) | 0.4946 (7) | 0.036 (2) | |
| H16D | −0.1881 | 0.3525 | 0.4356 | 0.054* | |
| H16E | −0.1646 | 0.5117 | 0.4687 | 0.054* | |
| H16F | −0.3231 | 0.4056 | 0.5354 | 0.054* | |
| O2 | 0.4216 (8) | 0.4614 (6) | 0.7244 (5) | 0.0338 (14) | |
| Br3 | 0.14860 (10) | 0.09484 (7) | 0.65374 (6) | 0.0290 (2) | |
| Br4 | −0.31319 (12) | 0.12276 (9) | 0.62628 (7) | 0.0378 (3) |
Atomic displacement parameters (Å2)
| U11 | U22 | U33 | U12 | U13 | U23 | |
| C1 | 0.029 (5) | 0.015 (4) | 0.039 (5) | 0.006 (3) | −0.006 (4) | −0.002 (3) |
| C2 | 0.032 (5) | 0.042 (5) | 0.027 (5) | 0.003 (4) | −0.011 (4) | 0.003 (4) |
| C3 | 0.028 (5) | 0.038 (6) | 0.021 (5) | 0.002 (4) | −0.012 (4) | −0.006 (4) |
| C4 | 0.020 (4) | 0.028 (4) | 0.027 (4) | 0.000 (3) | −0.003 (3) | 0.005 (3) |
| C5 | 0.014 (4) | 0.030 (4) | 0.022 (4) | 0.011 (3) | 0.002 (3) | −0.002 (3) |
| C6 | 0.018 (4) | 0.019 (4) | 0.022 (4) | 0.002 (3) | −0.008 (3) | −0.001 (3) |
| C7 | 0.020 (4) | 0.021 (4) | 0.025 (4) | 0.005 (3) | 0.004 (3) | −0.003 (3) |
| C8 | 0.030 (5) | 0.027 (4) | 0.025 (5) | 0.008 (3) | 0.002 (4) | −0.002 (3) |
| C9 | 0.029 (5) | 0.030 (5) | 0.042 (6) | −0.008 (4) | −0.015 (4) | −0.007 (4) |
| C10 | 0.036 (5) | 0.021 (4) | 0.041 (5) | 0.005 (3) | −0.013 (4) | −0.004 (4) |
| C11 | 0.030 (4) | 0.023 (5) | 0.031 (5) | 0.000 (3) | −0.004 (4) | 0.004 (4) |
| C12 | 0.019 (4) | 0.021 (4) | 0.027 (4) | 0.001 (3) | −0.003 (3) | −0.009 (3) |
| C13 | 0.040 (6) | 0.037 (5) | 0.043 (6) | 0.006 (4) | −0.018 (5) | 0.006 (4) |
| C14 | 0.048 (6) | 0.046 (6) | 0.018 (5) | 0.012 (4) | 0.003 (4) | −0.007 (4) |
| C15 | 0.044 (6) | 0.034 (5) | 0.017 (4) | 0.015 (4) | −0.012 (4) | −0.009 (4) |
| C16 | 0.024 (5) | 0.050 (6) | 0.034 (5) | −0.008 (4) | 0.007 (4) | −0.003 (4) |
| O1 | 0.017 (3) | 0.034 (3) | 0.059 (4) | 0.005 (2) | −0.001 (3) | 0.000 (3) |
| Br1 | 0.0291 (5) | 0.0234 (5) | 0.0468 (6) | 0.0026 (3) | −0.0041 (4) | −0.0068 (4) |
| Br2 | 0.0272 (5) | 0.0480 (6) | 0.0380 (6) | 0.0191 (4) | −0.0027 (4) | −0.0084 (5) |
| C1A | 0.017 (4) | 0.031 (4) | 0.024 (4) | 0.000 (3) | 0.005 (3) | 0.000 (3) |
| C2A | 0.028 (4) | 0.028 (4) | 0.026 (5) | 0.006 (3) | 0.010 (4) | 0.001 (3) |
| C3A | 0.020 (4) | 0.024 (5) | 0.027 (5) | 0.001 (3) | 0.005 (4) | −0.003 (4) |
| C4A | 0.015 (4) | 0.022 (4) | 0.035 (5) | 0.000 (3) | −0.004 (3) | 0.000 (3) |
| C5A | 0.018 (4) | 0.029 (4) | 0.016 (4) | −0.002 (3) | −0.001 (3) | −0.006 (3) |
| C6A | 0.018 (4) | 0.014 (4) | 0.024 (4) | 0.005 (3) | 0.004 (3) | 0.002 (3) |
| C7A | 0.024 (4) | 0.016 (4) | 0.023 (4) | 0.004 (3) | −0.003 (3) | −0.006 (3) |
| C8A | 0.034 (5) | 0.023 (4) | 0.013 (4) | 0.003 (3) | −0.003 (3) | −0.002 (3) |
| C9A | 0.021 (4) | 0.030 (4) | 0.027 (5) | 0.008 (3) | 0.011 (4) | −0.004 (4) |
| C10A | 0.038 (5) | 0.017 (4) | 0.043 (5) | 0.013 (3) | 0.009 (4) | 0.001 (4) |
| C11A | 0.024 (4) | 0.012 (4) | 0.039 (5) | 0.004 (3) | 0.002 (4) | 0.003 (3) |
| C12A | 0.021 (4) | 0.018 (4) | 0.031 (5) | 0.004 (3) | 0.002 (3) | −0.006 (3) |
| C13A | 0.034 (5) | 0.026 (5) | 0.045 (6) | −0.004 (4) | 0.003 (4) | −0.001 (4) |
| C14A | 0.029 (5) | 0.024 (4) | 0.041 (5) | 0.005 (4) | 0.006 (4) | 0.004 (4) |
| C15A | 0.045 (5) | 0.024 (4) | 0.025 (5) | 0.003 (4) | −0.010 (4) | −0.005 (3) |
| C16A | 0.027 (5) | 0.051 (6) | 0.030 (5) | 0.002 (4) | −0.006 (4) | −0.003 (4) |
| O2 | 0.016 (3) | 0.035 (3) | 0.050 (4) | 0.001 (2) | −0.003 (3) | −0.001 (3) |
| Br3 | 0.0281 (5) | 0.0210 (5) | 0.0387 (6) | 0.0047 (3) | −0.0057 (4) | −0.0052 (4) |
| Br4 | 0.0263 (5) | 0.0444 (6) | 0.0443 (6) | −0.0121 (4) | −0.0082 (4) | −0.0074 (5) |
Geometric parameters (Å, º)
| C1—C12 | 1.525 (11) | C1A—C13A | 1.539 (11) |
| C1—C11 | 1.537 (11) | C1A—C11A | 1.552 (10) |
| C1—C13 | 1.547 (11) | C1A—C12A | 1.557 (10) |
| C1—C2 | 1.564 (11) | C1A—C2A | 1.557 (11) |
| C2—C3 | 1.534 (12) | C2A—C3A | 1.524 (11) |
| C2—H2A | 0.9900 | C2A—H2C | 0.9900 |
| C2—H2B | 0.9900 | C2A—H2D | 0.9900 |
| C3—C4 | 1.534 (10) | C3A—C4A | 1.532 (9) |
| C3—H3A | 0.9900 | C3A—H3C | 0.9900 |
| C3—H3B | 0.9900 | C3A—H3D | 0.9900 |
| C4—C5 | 1.517 (10) | C4A—C5A | 1.490 (10) |
| C4—C16 | 1.519 (10) | C4A—C16A | 1.529 (11) |
| C4—C6 | 1.548 (10) | C4A—C6A | 1.534 (10) |
| C5—C6 | 1.506 (11) | C5A—C6A | 1.518 (10) |
| C5—Br1 | 1.907 (8) | C5A—Br4 | 1.921 (7) |
| C5—Br2 | 1.930 (7) | C5A—Br3 | 1.933 (8) |
| C6—C7 | 1.527 (9) | C6A—C7A | 1.503 (10) |
| C6—H6 | 1.0000 | C6A—H6A1 | 1.0000 |
| C7—C12 | 1.522 (10) | C7A—C12A | 1.523 (10) |
| C7—C8 | 1.591 (10) | C7A—C8A | 1.575 (10) |
| C7—H7 | 1.0000 | C7A—H7A1 | 1.0000 |
| C8—C14 | 1.526 (10) | C8A—C14A | 1.526 (10) |
| C8—C15 | 1.555 (10) | C8A—C9A | 1.530 (10) |
| C8—C9 | 1.556 (11) | C8A—C15A | 1.551 (10) |
| C9—C10 | 1.513 (11) | C9A—C10A | 1.545 (11) |
| C9—H9A | 0.9900 | C9A—H9A1 | 0.9900 |
| C9—H9B | 0.9900 | C9A—H9A2 | 0.9900 |
| C10—C11 | 1.542 (11) | C10A—C11A | 1.512 (11) |
| C10—H10A | 0.9900 | C10A—H10C | 0.9900 |
| C10—H10B | 0.9900 | C10A—H10D | 0.9900 |
| C11—H11A | 0.9900 | C11A—H11C | 0.9900 |
| C11—H11B | 0.9900 | C11A—H11D | 0.9900 |
| C12—O1 | 1.217 (9) | C12A—O2 | 1.212 (9) |
| C13—H13A | 0.9800 | C13A—H13D | 0.9800 |
| C13—H13B | 0.9800 | C13A—H13E | 0.9800 |
| C13—H13C | 0.9800 | C13A—H13F | 0.9800 |
| C14—H14A | 0.9800 | C14A—H14D | 0.9800 |
| C14—H14B | 0.9800 | C14A—H14E | 0.9800 |
| C14—H14C | 0.9800 | C14A—H14F | 0.9800 |
| C15—H15A | 0.9800 | C15A—H15D | 0.9800 |
| C15—H15B | 0.9800 | C15A—H15E | 0.9800 |
| C15—H15C | 0.9800 | C15A—H15F | 0.9800 |
| C16—H16A | 0.9800 | C16A—H16D | 0.9800 |
| C16—H16B | 0.9800 | C16A—H16E | 0.9800 |
| C16—H16C | 0.9800 | C16A—H16F | 0.9800 |
| C12—C1—C11 | 111.9 (7) | C13A—C1A—C11A | 110.5 (7) |
| C12—C1—C13 | 108.5 (7) | C13A—C1A—C12A | 108.2 (7) |
| C11—C1—C13 | 109.4 (6) | C11A—C1A—C12A | 112.0 (6) |
| C12—C1—C2 | 108.1 (6) | C13A—C1A—C2A | 109.6 (6) |
| C11—C1—C2 | 110.6 (7) | C11A—C1A—C2A | 110.4 (7) |
| C13—C1—C2 | 108.3 (7) | C12A—C1A—C2A | 106.0 (6) |
| C3—C2—C1 | 116.4 (7) | C3A—C2A—C1A | 116.6 (6) |
| C3—C2—H2A | 108.2 | C3A—C2A—H2C | 108.2 |
| C1—C2—H2A | 108.2 | C1A—C2A—H2C | 108.2 |
| C3—C2—H2B | 108.2 | C3A—C2A—H2D | 108.2 |
| C1—C2—H2B | 108.2 | C1A—C2A—H2D | 108.2 |
| H2A—C2—H2B | 107.3 | H2C—C2A—H2D | 107.3 |
| C4—C3—C2 | 113.0 (7) | C2A—C3A—C4A | 114.3 (6) |
| C4—C3—H3A | 109.0 | C2A—C3A—H3C | 108.7 |
| C2—C3—H3A | 109.0 | C4A—C3A—H3C | 108.7 |
| C4—C3—H3B | 109.0 | C2A—C3A—H3D | 108.7 |
| C2—C3—H3B | 109.0 | C4A—C3A—H3D | 108.7 |
| H3A—C3—H3B | 107.8 | H3C—C3A—H3D | 107.6 |
| C5—C4—C16 | 119.2 (7) | C5A—C4A—C16A | 116.7 (6) |
| C5—C4—C3 | 118.8 (6) | C5A—C4A—C3A | 120.5 (6) |
| C16—C4—C3 | 113.7 (7) | C16A—C4A—C3A | 112.8 (7) |
| C5—C4—C6 | 58.9 (5) | C5A—C4A—C6A | 60.2 (5) |
| C16—C4—C6 | 118.0 (7) | C16A—C4A—C6A | 117.5 (7) |
| C3—C4—C6 | 117.7 (7) | C3A—C4A—C6A | 119.6 (6) |
| C6—C5—C4 | 61.6 (5) | C4A—C5A—C6A | 61.3 (5) |
| C6—C5—Br1 | 121.7 (5) | C4A—C5A—Br4 | 121.0 (5) |
| C4—C5—Br1 | 121.1 (5) | C6A—C5A—Br4 | 118.9 (5) |
| C6—C5—Br2 | 116.7 (6) | C4A—C5A—Br3 | 120.7 (5) |
| C4—C5—Br2 | 119.3 (5) | C6A—C5A—Br3 | 119.2 (5) |
| Br1—C5—Br2 | 109.6 (4) | Br4—C5A—Br3 | 109.0 (3) |
| C5—C6—C7 | 121.8 (7) | C7A—C6A—C5A | 122.4 (6) |
| C5—C6—C4 | 59.5 (5) | C7A—C6A—C4A | 124.3 (6) |
| C7—C6—C4 | 124.2 (6) | C5A—C6A—C4A | 58.5 (5) |
| C5—C6—H6 | 113.6 | C7A—C6A—H6A1 | 113.6 |
| C7—C6—H6 | 113.6 | C5A—C6A—H6A1 | 113.6 |
| C4—C6—H6 | 113.6 | C4A—C6A—H6A1 | 113.6 |
| C12—C7—C6 | 116.5 (6) | C6A—C7A—C12A | 114.9 (6) |
| C12—C7—C8 | 110.2 (6) | C6A—C7A—C8A | 112.2 (6) |
| C6—C7—C8 | 110.8 (6) | C12A—C7A—C8A | 110.7 (6) |
| C12—C7—H7 | 106.2 | C6A—C7A—H7A1 | 106.1 |
| C6—C7—H7 | 106.2 | C12A—C7A—H7A1 | 106.1 |
| C8—C7—H7 | 106.2 | C8A—C7A—H7A1 | 106.1 |
| C14—C8—C15 | 108.8 (7) | C14A—C8A—C9A | 107.6 (6) |
| C14—C8—C9 | 110.2 (7) | C14A—C8A—C15A | 107.6 (6) |
| C15—C8—C9 | 109.0 (7) | C9A—C8A—C15A | 110.3 (6) |
| C14—C8—C7 | 109.3 (6) | C14A—C8A—C7A | 108.5 (6) |
| C15—C8—C7 | 107.4 (6) | C9A—C8A—C7A | 112.9 (6) |
| C9—C8—C7 | 112.0 (6) | C15A—C8A—C7A | 109.7 (6) |
| C10—C9—C8 | 118.1 (7) | C8A—C9A—C10A | 118.4 (7) |
| C10—C9—H9A | 107.8 | C8A—C9A—H9A1 | 107.7 |
| C8—C9—H9A | 107.8 | C10A—C9A—H9A1 | 107.7 |
| C10—C9—H9B | 107.8 | C8A—C9A—H9A2 | 107.7 |
| C8—C9—H9B | 107.8 | C10A—C9A—H9A2 | 107.7 |
| H9A—C9—H9B | 107.1 | H9A1—C9A—H9A2 | 107.1 |
| C9—C10—C11 | 113.4 (7) | C11A—C10A—C9A | 113.2 (7) |
| C9—C10—H10A | 108.9 | C11A—C10A—H10C | 108.9 |
| C11—C10—H10A | 108.9 | C9A—C10A—H10C | 108.9 |
| C9—C10—H10B | 108.9 | C11A—C10A—H10D | 108.9 |
| C11—C10—H10B | 108.9 | C9A—C10A—H10D | 108.9 |
| H10A—C10—H10B | 107.7 | H10C—C10A—H10D | 107.7 |
| C1—C11—C10 | 116.0 (7) | C10A—C11A—C1A | 116.8 (7) |
| C1—C11—H11A | 108.3 | C10A—C11A—H11C | 108.1 |
| C10—C11—H11A | 108.3 | C1A—C11A—H11C | 108.1 |
| C1—C11—H11B | 108.3 | C10A—C11A—H11D | 108.1 |
| C10—C11—H11B | 108.3 | C1A—C11A—H11D | 108.1 |
| H11A—C11—H11B | 107.4 | H11C—C11A—H11D | 107.3 |
| O1—C12—C7 | 118.5 (7) | O2—C12A—C7A | 120.0 (7) |
| O1—C12—C1 | 120.7 (7) | O2—C12A—C1A | 119.0 (7) |
| C7—C12—C1 | 120.6 (6) | C7A—C12A—C1A | 121.0 (6) |
| C1—C13—H13A | 109.5 | C1A—C13A—H13D | 109.5 |
| C1—C13—H13B | 109.5 | C1A—C13A—H13E | 109.5 |
| H13A—C13—H13B | 109.5 | H13D—C13A—H13E | 109.5 |
| C1—C13—H13C | 109.5 | C1A—C13A—H13F | 109.5 |
| H13A—C13—H13C | 109.5 | H13D—C13A—H13F | 109.5 |
| H13B—C13—H13C | 109.5 | H13E—C13A—H13F | 109.5 |
| C8—C14—H14A | 109.5 | C8A—C14A—H14D | 109.5 |
| C8—C14—H14B | 109.5 | C8A—C14A—H14E | 109.5 |
| H14A—C14—H14B | 109.5 | H14D—C14A—H14E | 109.5 |
| C8—C14—H14C | 109.5 | C8A—C14A—H14F | 109.5 |
| H14A—C14—H14C | 109.5 | H14D—C14A—H14F | 109.5 |
| H14B—C14—H14C | 109.5 | H14E—C14A—H14F | 109.5 |
| C8—C15—H15A | 109.5 | C8A—C15A—H15D | 109.5 |
| C8—C15—H15B | 109.5 | C8A—C15A—H15E | 109.5 |
| H15A—C15—H15B | 109.5 | H15D—C15A—H15E | 109.5 |
| C8—C15—H15C | 109.5 | C8A—C15A—H15F | 109.5 |
| H15A—C15—H15C | 109.5 | H15D—C15A—H15F | 109.5 |
| H15B—C15—H15C | 109.5 | H15E—C15A—H15F | 109.5 |
| C4—C16—H16A | 109.5 | C4A—C16A—H16D | 109.5 |
| C4—C16—H16B | 109.5 | C4A—C16A—H16E | 109.5 |
| H16A—C16—H16B | 109.5 | H16D—C16A—H16E | 109.5 |
| C4—C16—H16C | 109.5 | C4A—C16A—H16F | 109.5 |
| H16A—C16—H16C | 109.5 | H16D—C16A—H16F | 109.5 |
| H16B—C16—H16C | 109.5 | H16E—C16A—H16F | 109.5 |
Footnotes
Supporting information for this paper is available from the IUCr electronic archives (Reference: BT6972).
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. DOI: 10.1107/S1600536814007351/bt6972sup1.cif
Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536814007351/bt6972Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536814007351/bt6972Isup3.cml
CCDC reference: 995040
Additional supporting information: crystallographic information; 3D view; checkCIF report

