| Literature DB >> 21580418 |
Yong-Qing Su1, Cong Li, Ping Wang.
Abstract
In the title Schiff base compound, C(13)H(9)Br(2)N(3)O(2), there is an intra-molecular O-H⋯N hydrogen bond involving the hydroxyl substituent and the adjacent hydrazine N atom. The mol-ecule is almost planar, the dihedral angle between the benzene ring and the pyridine ring being 5.7 (2)°. In the crystal structure, symmetry-related mol-ecules are linked via N-H⋯O hydrogen bonds, forming chains propagating in [001].Entities:
Year: 2010 PMID: 21580418 PMCID: PMC2983678 DOI: 10.1107/S1600536810006276
Source DB: PubMed Journal: Acta Crystallogr Sect E Struct Rep Online ISSN: 1600-5368
| C13H9Br2N3O2 | |
| Monoclinic, | Mo |
| Hall symbol: -P 2ybc | Cell parameters from 2084 reflections |
| θ = 2.4–25.2° | |
| µ = 5.81 mm−1 | |
| β = 92.194 (13)° | Block, colourless |
| 0.23 × 0.21 × 0.20 mm | |
| Bruker APEXII CCD area-detector diffractometer | 3023 independent reflections |
| Radiation source: fine-focus sealed tube | 1933 reflections with |
| graphite | |
| ω scans | θmax = 27.0°, θmin = 1.2° |
| Absorption correction: multi-scan ( | |
| 8024 measured reflections |
| Refinement on | Primary atom site location: structure-invariant direct methods |
| Least-squares matrix: full | Secondary atom site location: difference Fourier map |
| Hydrogen site location: inferred from neighbouring sites | |
| H atoms treated by a mixture of independent and constrained refinement | |
| 3023 reflections | (Δ/σ)max = 0.001 |
| 185 parameters | Δρmax = 0.64 e Å−3 |
| 1 restraint | Δρmin = −0.69 e Å−3 |
| 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. |
| Refinement. Refinement of |
| Br1 | 0.38611 (2) | 1.15620 (7) | 0.38681 (5) | 0.0731 (2) | |
| Br2 | 0.44353 (2) | 0.85756 (6) | 0.88313 (4) | 0.06341 (18) | |
| N1 | 0.11733 (17) | 0.8462 (3) | 0.5380 (3) | 0.0393 (7) | |
| N2 | 0.04257 (16) | 0.7852 (4) | 0.5483 (3) | 0.0402 (7) | |
| N3 | −0.16645 (18) | 0.5160 (4) | 0.5780 (3) | 0.0501 (8) | |
| O1 | 0.22622 (14) | 1.0061 (3) | 0.4163 (2) | 0.0514 (7) | |
| H1 | 0.1820 | 0.9696 | 0.4270 | 0.077* | |
| O2 | 0.01730 (14) | 0.8169 (3) | 0.3293 (2) | 0.0508 (7) | |
| C1 | 0.2459 (2) | 0.8814 (4) | 0.6310 (3) | 0.0383 (8) | |
| C2 | 0.27257 (19) | 0.9725 (4) | 0.5231 (3) | 0.0377 (8) | |
| C3 | 0.3494 (2) | 1.0292 (4) | 0.5283 (3) | 0.0437 (9) | |
| C4 | 0.4001 (2) | 0.9964 (4) | 0.6347 (3) | 0.0455 (9) | |
| H4 | 0.4512 | 1.0374 | 0.6373 | 0.055* | |
| C5 | 0.3737 (2) | 0.9026 (4) | 0.7363 (3) | 0.0403 (8) | |
| C6 | 0.2980 (2) | 0.8450 (4) | 0.7371 (3) | 0.0430 (9) | |
| H6 | 0.2813 | 0.7823 | 0.8076 | 0.052* | |
| C7 | 0.1655 (2) | 0.8224 (4) | 0.6360 (3) | 0.0396 (8) | |
| H7 | 0.1490 | 0.7673 | 0.7104 | 0.048* | |
| C8 | −0.00388 (19) | 0.7712 (4) | 0.4372 (3) | 0.0366 (8) | |
| C9 | −0.08166 (19) | 0.6936 (4) | 0.4557 (3) | 0.0358 (8) | |
| C10 | −0.1424 (2) | 0.7215 (5) | 0.3642 (4) | 0.0492 (9) | |
| H10 | −0.1347 | 0.7889 | 0.2917 | 0.059* | |
| C11 | −0.2145 (2) | 0.6488 (5) | 0.3811 (4) | 0.0541 (11) | |
| H11 | −0.2561 | 0.6666 | 0.3207 | 0.065* | |
| C12 | −0.2236 (2) | 0.5493 (5) | 0.4894 (4) | 0.0510 (10) | |
| H12 | −0.2727 | 0.5025 | 0.5011 | 0.061* | |
| C13 | −0.0972 (2) | 0.5869 (4) | 0.5595 (3) | 0.0417 (9) | |
| H13 | −0.0563 | 0.5637 | 0.6200 | 0.050* | |
| H2 | 0.024 (2) | 0.764 (6) | 0.629 (2) | 0.080* |
| Br1 | 0.0414 (3) | 0.1045 (4) | 0.0730 (3) | −0.0128 (2) | −0.0014 (2) | 0.0354 (3) |
| Br2 | 0.0494 (3) | 0.0779 (3) | 0.0609 (3) | 0.0041 (2) | −0.0244 (2) | 0.0057 (2) |
| N1 | 0.0304 (16) | 0.0528 (18) | 0.0347 (16) | −0.0058 (13) | 0.0011 (12) | −0.0056 (13) |
| N2 | 0.0285 (16) | 0.0596 (19) | 0.0324 (16) | −0.0048 (14) | −0.0016 (12) | −0.0034 (14) |
| N3 | 0.0425 (19) | 0.057 (2) | 0.0510 (19) | −0.0091 (15) | 0.0009 (15) | 0.0027 (15) |
| O1 | 0.0355 (15) | 0.079 (2) | 0.0393 (14) | −0.0054 (13) | −0.0059 (11) | 0.0100 (13) |
| O2 | 0.0404 (15) | 0.082 (2) | 0.0301 (14) | −0.0050 (13) | −0.0007 (11) | 0.0079 (13) |
| C1 | 0.0308 (19) | 0.044 (2) | 0.040 (2) | −0.0013 (15) | −0.0025 (15) | −0.0067 (16) |
| C2 | 0.0319 (19) | 0.047 (2) | 0.0344 (18) | 0.0030 (15) | −0.0022 (14) | −0.0012 (16) |
| C3 | 0.035 (2) | 0.051 (2) | 0.045 (2) | −0.0012 (16) | −0.0013 (16) | 0.0044 (17) |
| C4 | 0.030 (2) | 0.051 (2) | 0.055 (2) | −0.0002 (17) | −0.0051 (17) | −0.0015 (19) |
| C5 | 0.036 (2) | 0.044 (2) | 0.041 (2) | 0.0035 (16) | −0.0078 (15) | −0.0012 (17) |
| C6 | 0.043 (2) | 0.047 (2) | 0.039 (2) | 0.0002 (17) | −0.0033 (16) | −0.0008 (16) |
| C7 | 0.037 (2) | 0.044 (2) | 0.037 (2) | −0.0012 (15) | −0.0033 (16) | −0.0010 (15) |
| C8 | 0.0315 (19) | 0.043 (2) | 0.0347 (19) | 0.0033 (15) | −0.0029 (15) | −0.0034 (16) |
| C9 | 0.0322 (19) | 0.043 (2) | 0.0318 (18) | 0.0028 (15) | −0.0015 (14) | −0.0087 (15) |
| C10 | 0.042 (2) | 0.066 (3) | 0.038 (2) | −0.0023 (19) | −0.0067 (17) | 0.0071 (19) |
| C11 | 0.034 (2) | 0.077 (3) | 0.050 (2) | 0.0003 (19) | −0.0100 (17) | −0.011 (2) |
| C12 | 0.037 (2) | 0.056 (2) | 0.061 (3) | −0.0079 (18) | 0.0017 (18) | −0.012 (2) |
| C13 | 0.038 (2) | 0.047 (2) | 0.039 (2) | −0.0013 (17) | −0.0042 (16) | 0.0019 (16) |
| Br1—C3 | 1.892 (4) | C3—C4 | 1.382 (4) |
| Br2—C5 | 1.905 (3) | C4—C5 | 1.370 (5) |
| N1—C7 | 1.278 (4) | C4—H4 | 0.9300 |
| N1—N2 | 1.372 (4) | C5—C6 | 1.371 (5) |
| N2—C8 | 1.357 (4) | C6—H6 | 0.9300 |
| N2—H2 | 0.901 (10) | C7—H7 | 0.9300 |
| N3—C12 | 1.326 (4) | C8—C9 | 1.483 (5) |
| N3—C13 | 1.330 (4) | C9—C10 | 1.381 (5) |
| O1—C2 | 1.344 (4) | C9—C13 | 1.396 (5) |
| O1—H1 | 0.8200 | C10—C11 | 1.377 (5) |
| O2—C8 | 1.223 (4) | C10—H10 | 0.9300 |
| C1—C6 | 1.401 (5) | C11—C12 | 1.376 (5) |
| C1—C2 | 1.409 (5) | C11—H11 | 0.9300 |
| C1—C7 | 1.452 (5) | C12—H12 | 0.9300 |
| C2—C3 | 1.384 (5) | C13—H13 | 0.9300 |
| C7—N1—N2 | 117.1 (3) | C1—C6—H6 | 120.3 |
| C8—N2—N1 | 118.6 (3) | N1—C7—C1 | 120.0 (3) |
| C8—N2—H2 | 122 (3) | N1—C7—H7 | 120.0 |
| N1—N2—H2 | 119 (3) | C1—C7—H7 | 120.0 |
| C12—N3—C13 | 116.5 (3) | O2—C8—N2 | 122.5 (3) |
| C2—O1—H1 | 109.5 | O2—C8—C9 | 122.4 (3) |
| C6—C1—C2 | 119.6 (3) | N2—C8—C9 | 115.1 (3) |
| C6—C1—C7 | 118.3 (3) | C10—C9—C13 | 116.7 (3) |
| C2—C1—C7 | 122.1 (3) | C10—C9—C8 | 119.6 (3) |
| O1—C2—C3 | 119.2 (3) | C13—C9—C8 | 123.6 (3) |
| O1—C2—C1 | 122.4 (3) | C11—C10—C9 | 119.6 (4) |
| C3—C2—C1 | 118.4 (3) | C11—C10—H10 | 120.2 |
| C4—C3—C2 | 121.7 (3) | C9—C10—H10 | 120.2 |
| C4—C3—Br1 | 118.9 (3) | C12—C11—C10 | 118.5 (4) |
| C2—C3—Br1 | 119.4 (3) | C12—C11—H11 | 120.8 |
| C5—C4—C3 | 118.9 (3) | C10—C11—H11 | 120.8 |
| C5—C4—H4 | 120.6 | N3—C12—C11 | 124.0 (4) |
| C3—C4—H4 | 120.6 | N3—C12—H12 | 118.0 |
| C4—C5—C6 | 121.9 (3) | C11—C12—H12 | 118.0 |
| C4—C5—Br2 | 118.9 (3) | N3—C13—C9 | 124.6 (3) |
| C6—C5—Br2 | 119.2 (3) | N3—C13—H13 | 117.7 |
| C5—C6—C1 | 119.4 (3) | C9—C13—H13 | 117.7 |
| C5—C6—H6 | 120.3 |
| H··· | ||||
| O1—H1···N1 | 0.82 | 1.89 | 2.609 (4) | 146 |
| N2—H2···O2i | 0.91 (2) | 2.14 (2) | 3.017 (4) | 162 (3) |
Hydrogen-bond geometry (Å, °)
| H⋯ | ||||
|---|---|---|---|---|
| O1—H1⋯N1 | 0.82 | 1.89 | 2.609 (4) | 146 |
| N2—H2⋯O2i | 0.91 (2) | 2.14 (2) | 3.017 (4) | 162 (3) |
Symmetry code: (i) .