| Literature DB >> 22059068 |
Jun-Long Niu, Xia Wang, Lin-Bao Zhang, Mao-Ping Song.
Abstract
The complete mol-ecule of the title compund, C(15)H(14)Br(2)O(2), is generated by the application of crystallographic twofold symmetry, with the central C atom lying on the rotation axis. The dihedral angle between the benzene rings is 62.4 (3)°. In the crystal, short Br⋯Br contacts [3.4885 (16) Å] occur.Entities:
Year: 2011 PMID: 22059068 PMCID: PMC3200963 DOI: 10.1107/S1600536811034805
Source DB: PubMed Journal: Acta Crystallogr Sect E Struct Rep Online ISSN: 1600-5368
| C15H14Br2O2 | |
| Cu | |
| Orthorhombic, | Cell parameters from 443 reflections |
| θ = 4.1–69.9° | |
| µ = 6.91 mm−1 | |
| Prism, colorless | |
| 0.35 × 0.30 × 0.30 mm | |
| Agilent Xcalibur Eos Gemini diffractometer | 1022 independent reflections |
| Radiation source: fine-focus sealed tube | 754 reflections with |
| graphite | |
| Detector resolution: 16.2312 pixels mm-1 | θmax = 66.9°, θmin = 5.0° |
| ω scans | |
| Absorption correction: multi-scan ( | |
| 1505 measured reflections |
| Refinement on | Secondary atom site location: difference Fourier map |
| Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
| H-atom parameters constrained | |
| (Δ/σ)max < 0.001 | |
| 1022 reflections | Δρmax = 0.36 e Å−3 |
| 88 parameters | Δρmin = −0.41 e Å−3 |
| 0 restraints | Absolute structure: Flack (1983), 212 Friedel pairs |
| Primary atom site location: structure-invariant direct methods | Flack parameter: −0.11 (9) |
| 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 |
| Occ. (<1) | |||||
| Br1 | 0.85154 (9) | 0.95619 (6) | 0.6233 (4) | 0.0946 (6) | |
| O1 | 0.6042 (5) | 0.9803 (3) | 0.3521 (17) | 0.0668 (18) | |
| C1 | 0.7175 (7) | 0.8802 (4) | 0.624 (3) | 0.054 (2) | |
| C2 | 0.6083 (7) | 0.9029 (5) | 0.489 (2) | 0.056 (3) | |
| C3 | 0.5091 (8) | 0.8444 (5) | 0.500 (2) | 0.066 (3) | |
| H3 | 0.4330 | 0.8573 | 0.4098 | 0.079* | |
| C4 | 0.5267 (8) | 0.7679 (5) | 0.646 (3) | 0.070 (3) | |
| H4 | 0.4617 | 0.7294 | 0.6501 | 0.084* | |
| C5 | 0.6369 (8) | 0.7465 (4) | 0.787 (2) | 0.060 (3) | |
| C6 | 0.7312 (8) | 0.8044 (5) | 0.779 (2) | 0.058 (3) | |
| H6 | 0.8056 | 0.7925 | 0.8792 | 0.069* | |
| C7 | 0.6509 (9) | 0.6621 (5) | 0.946 (2) | 0.090 (3) | |
| H7A | 0.7023 | 0.6684 | 1.1261 | 0.135* | |
| H7B | 0.6886 | 0.6226 | 0.8070 | 0.135* | |
| H7C | 0.5706 | 0.6417 | 1.0072 | 0.135* | |
| C8 | 0.5000 | 1.0000 | 0.168 (4) | 0.080 (5) | |
| H8A | 0.4805 | 0.9524 | 0.0361 | 0.096* | 0.50 |
| H8B | 0.5195 | 1.0476 | 0.0361 | 0.096* | 0.50 |
| Br1 | 0.0546 (6) | 0.0668 (6) | 0.1623 (14) | −0.0129 (5) | −0.0131 (8) | 0.0130 (8) |
| O1 | 0.049 (3) | 0.062 (3) | 0.089 (5) | 0.017 (3) | 0.004 (4) | 0.012 (4) |
| C1 | 0.052 (4) | 0.042 (4) | 0.066 (7) | 0.009 (3) | 0.001 (5) | 0.004 (5) |
| C2 | 0.048 (4) | 0.056 (5) | 0.062 (8) | 0.020 (4) | 0.010 (5) | −0.001 (5) |
| C3 | 0.043 (4) | 0.081 (6) | 0.074 (8) | 0.006 (5) | −0.009 (5) | −0.012 (6) |
| C4 | 0.058 (5) | 0.061 (5) | 0.090 (9) | −0.011 (4) | 0.009 (7) | −0.008 (7) |
| C5 | 0.064 (5) | 0.041 (4) | 0.074 (8) | −0.006 (4) | 0.020 (5) | −0.001 (5) |
| C6 | 0.058 (5) | 0.057 (5) | 0.058 (7) | 0.008 (4) | 0.007 (5) | 0.002 (5) |
| C7 | 0.110 (8) | 0.062 (5) | 0.098 (9) | −0.002 (6) | 0.019 (9) | 0.026 (6) |
| C8 | 0.082 (10) | 0.077 (9) | 0.081 (12) | 0.023 (8) | 0.000 | 0.000 |
| Br1—C1 | 1.882 (7) | C5—C6 | 1.370 (10) |
| O1—C2 | 1.364 (9) | C5—C7 | 1.515 (10) |
| O1—C8 | 1.412 (10) | C6—H6 | 0.9300 |
| C1—C2 | 1.363 (11) | C7—H7A | 0.9600 |
| C1—C6 | 1.385 (10) | C7—H7B | 0.9600 |
| C2—C3 | 1.417 (11) | C7—H7C | 0.9600 |
| C3—C4 | 1.383 (11) | C8—O1i | 1.412 (10) |
| C3—H3 | 0.9300 | C8—H8A | 0.9700 |
| C4—C5 | 1.376 (12) | C8—H8B | 0.9700 |
| C4—H4 | 0.9300 | ||
| C2—O1—C8 | 118.0 (6) | C5—C6—C1 | 121.0 (8) |
| C2—C1—C6 | 122.1 (7) | C5—C6—H6 | 119.5 |
| C2—C1—Br1 | 119.4 (6) | C1—C6—H6 | 119.5 |
| C6—C1—Br1 | 118.4 (6) | C5—C7—H7A | 109.5 |
| C1—C2—O1 | 117.0 (7) | C5—C7—H7B | 109.5 |
| C1—C2—C3 | 117.6 (8) | H7A—C7—H7B | 109.5 |
| O1—C2—C3 | 125.5 (8) | C5—C7—H7C | 109.5 |
| C4—C3—C2 | 119.2 (8) | H7A—C7—H7C | 109.5 |
| C4—C3—H3 | 120.4 | H7B—C7—H7C | 109.5 |
| C2—C3—H3 | 120.4 | O1—C8—O1i | 111.2 (12) |
| C5—C4—C3 | 122.5 (8) | O1—C8—H8A | 109.4 |
| C5—C4—H4 | 118.7 | O1i—C8—H8A | 109.4 |
| C3—C4—H4 | 118.7 | O1—C8—H8B | 109.4 |
| C6—C5—C4 | 117.6 (8) | O1i—C8—H8B | 109.4 |
| C6—C5—C7 | 122.0 (9) | H8A—C8—H8B | 108.0 |
| C4—C5—C7 | 120.3 (8) | ||
| C6—C1—C2—O1 | 177.7 (8) | C2—C3—C4—C5 | 1.0 (16) |
| Br1—C1—C2—O1 | 1.3 (13) | C3—C4—C5—C6 | 0.2 (16) |
| C6—C1—C2—C3 | −2.4 (15) | C3—C4—C5—C7 | 179.6 (9) |
| Br1—C1—C2—C3 | −178.8 (7) | C4—C5—C6—C1 | −2.5 (15) |
| C8—O1—C2—C1 | 170.0 (9) | C7—C5—C6—C1 | 178.1 (8) |
| C8—O1—C2—C3 | −9.8 (14) | C2—C1—C6—C5 | 3.7 (15) |
| C1—C2—C3—C4 | 0.1 (15) | Br1—C1—C6—C5 | −179.8 (7) |
| O1—C2—C3—C4 | 179.9 (9) | C2—O1—C8—O1i | 76.7 (6) |