| Literature DB >> 21583474 |
Rifat Ara Jamal, Uzma Ashiq, Muhammad Nadeem Arshad, Zahida Tasneem Maqsood, Islam Ullah Khan.
Abstract
In the title compound, C(7)H(8)N(2)O(2), the mean planes of the benzene ring and the planar hydrazide group are inclined at 25.75 (6)° with respect to each other. The structure is stabilized by inter-molecular N-H⋯O and O-H⋯N hydrogen bonds.Entities:
Year: 2009 PMID: 21583474 PMCID: PMC2977245 DOI: 10.1107/S1600536809025094
Source DB: PubMed Journal: Acta Crystallogr Sect E Struct Rep Online ISSN: 1600-5368
| C7H8N2O2 | |
| Monoclinic, | Mo |
| Hall symbol: -P 2ybc | Cell parameters from 2993 reflections |
| θ = 2.9–28.3° | |
| µ = 0.11 mm−1 | |
| β = 93.489 (2)° | Needle, colourless |
| 0.32 × 0.18 × 0.12 mm | |
| Bruker Kappa APEX2 CCD diffractometer | 1697 independent reflections |
| Radiation source: fine-focus sealed tube | 1348 reflections with |
| graphite | |
| ω scans | θmax = 28.3°, θmin = 2.4° |
| Absorption correction: multi-scan ( | |
| 7324 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 | |
| 1697 reflections | (Δ/σ)max < 0.001 |
| 107 parameters | Δρmax = 0.36 e Å−3 |
| 0 restraints | Δρmin = −0.20 e Å−3 |
| 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 |
| O1 | 0.7565 (2) | 0.04052 (5) | 0.14740 (17) | 0.0478 (3) | |
| H1A | 0.8946 | 0.0291 | 0.2020 | 0.072* | |
| O2 | 0.36833 (17) | 0.38981 (5) | 0.10180 (14) | 0.0364 (3) | |
| N1 | 0.8045 (2) | 0.40995 (6) | 0.15266 (16) | 0.0331 (3) | |
| H1 | 0.9606 | 0.3900 | 0.1554 | 0.040* | |
| N2 | 0.7783 (2) | 0.49074 (6) | 0.1772 (2) | 0.0381 (3) | |
| H12 | 0.647 (4) | 0.4969 (10) | 0.247 (2) | 0.046* | |
| H22 | 0.736 (3) | 0.5124 (10) | 0.075 (2) | 0.046* | |
| C1 | 0.6499 (2) | 0.27877 (7) | 0.12927 (16) | 0.0244 (3) | |
| C2 | 0.4705 (2) | 0.22850 (7) | 0.04589 (17) | 0.0299 (3) | |
| H2 | 0.3217 | 0.2486 | −0.0145 | 0.036* | |
| C3 | 0.5095 (3) | 0.14912 (8) | 0.05121 (18) | 0.0335 (3) | |
| H3 | 0.3892 | 0.1161 | −0.0066 | 0.040* | |
| C4 | 0.7289 (3) | 0.11891 (7) | 0.14320 (18) | 0.0304 (3) | |
| C5 | 0.9081 (2) | 0.16847 (7) | 0.22869 (19) | 0.0325 (3) | |
| H5 | 1.0545 | 0.1484 | 0.2915 | 0.039* | |
| C6 | 0.8685 (2) | 0.24751 (7) | 0.22038 (18) | 0.0307 (3) | |
| H6 | 0.9904 | 0.2805 | 0.2768 | 0.037* | |
| C7 | 0.5947 (2) | 0.36334 (7) | 0.12527 (16) | 0.0255 (3) |
| O1 | 0.0407 (6) | 0.0216 (5) | 0.0792 (9) | 0.0012 (4) | −0.0124 (5) | 0.0027 (5) |
| O2 | 0.0201 (4) | 0.0278 (5) | 0.0605 (7) | 0.0024 (3) | −0.0032 (4) | 0.0034 (4) |
| N1 | 0.0203 (5) | 0.0213 (5) | 0.0574 (7) | 0.0009 (4) | −0.0008 (5) | −0.0007 (5) |
| N2 | 0.0305 (6) | 0.0206 (5) | 0.0627 (9) | −0.0015 (4) | −0.0020 (6) | 0.0009 (5) |
| C1 | 0.0202 (5) | 0.0231 (5) | 0.0299 (6) | 0.0007 (4) | 0.0011 (4) | 0.0016 (5) |
| C2 | 0.0238 (6) | 0.0277 (6) | 0.0372 (7) | −0.0002 (4) | −0.0061 (5) | 0.0024 (5) |
| C3 | 0.0299 (6) | 0.0277 (6) | 0.0418 (8) | −0.0046 (5) | −0.0057 (5) | −0.0017 (5) |
| C4 | 0.0288 (6) | 0.0208 (6) | 0.0418 (7) | −0.0002 (5) | 0.0037 (5) | 0.0024 (5) |
| C5 | 0.0240 (6) | 0.0274 (6) | 0.0450 (8) | 0.0033 (5) | −0.0061 (5) | 0.0045 (5) |
| C6 | 0.0238 (6) | 0.0266 (6) | 0.0408 (7) | −0.0009 (5) | −0.0067 (5) | −0.0006 (5) |
| C7 | 0.0210 (5) | 0.0241 (6) | 0.0311 (6) | 0.0011 (4) | 0.0004 (4) | 0.0013 (5) |
| O1—C4 | 1.3569 (14) | C1—C7 | 1.4824 (16) |
| O1—H1A | 0.8200 | C2—C3 | 1.3809 (17) |
| O2—C7 | 1.2356 (14) | C2—H2 | 0.9300 |
| N1—C7 | 1.3376 (15) | C3—C4 | 1.3866 (18) |
| N1—N2 | 1.4113 (15) | C3—H3 | 0.9300 |
| N1—H1 | 0.8600 | C4—C5 | 1.3864 (18) |
| N2—H12 | 0.89 (2) | C5—C6 | 1.3762 (17) |
| N2—H22 | 0.90 (2) | C5—H5 | 0.9300 |
| C1—C6 | 1.3870 (17) | C6—H6 | 0.9300 |
| C1—C2 | 1.3876 (17) | ||
| C4—O1—H1A | 109.5 | C2—C3—H3 | 120.2 |
| C7—N1—N2 | 122.18 (10) | C4—C3—H3 | 120.2 |
| C7—N1—H1 | 118.9 | O1—C4—C5 | 122.50 (12) |
| N2—N1—H1 | 118.9 | O1—C4—C3 | 117.60 (12) |
| N1—N2—H12 | 106.3 (11) | C5—C4—C3 | 119.90 (12) |
| N1—N2—H22 | 108.1 (11) | C6—C5—C4 | 119.78 (12) |
| H12—N2—H22 | 110.4 (17) | C6—C5—H5 | 120.1 |
| C6—C1—C2 | 118.52 (11) | C4—C5—H5 | 120.1 |
| C6—C1—C7 | 122.35 (11) | C5—C6—C1 | 121.13 (12) |
| C2—C1—C7 | 119.05 (11) | C5—C6—H6 | 119.4 |
| C3—C2—C1 | 120.98 (12) | C1—C6—H6 | 119.4 |
| C3—C2—H2 | 119.5 | O2—C7—N1 | 121.45 (11) |
| C1—C2—H2 | 119.5 | O2—C7—C1 | 122.48 (11) |
| C2—C3—C4 | 119.68 (12) | N1—C7—C1 | 116.04 (10) |
| C6—C1—C2—C3 | −0.8 (2) | C2—C1—C6—C5 | 0.0 (2) |
| C7—C1—C2—C3 | −177.79 (12) | C7—C1—C6—C5 | 176.81 (12) |
| C1—C2—C3—C4 | 1.0 (2) | N2—N1—C7—O2 | 7.9 (2) |
| C2—C3—C4—O1 | 178.80 (12) | N2—N1—C7—C1 | −170.63 (12) |
| C2—C3—C4—C5 | −0.2 (2) | C6—C1—C7—O2 | −152.94 (13) |
| O1—C4—C5—C6 | −179.61 (13) | C2—C1—C7—O2 | 23.90 (18) |
| C3—C4—C5—C6 | −0.6 (2) | C6—C1—C7—N1 | 25.57 (18) |
| C4—C5—C6—C1 | 0.8 (2) | C2—C1—C7—N1 | −157.60 (12) |
| H··· | ||||
| N1—H1···O2i | 0.86 | 2.13 | 2.9243 (14) | 153 |
| O1—H1A···N2ii | 0.82 | 1.98 | 2.7852 (16) | 174 |
| N2—H12···O1iii | 0.89 (2) | 2.37 (2) | 3.223 (2) | 160 |
| N2—H22···O2iv | 0.90 (2) | 2.22 (2) | 3.056 (2) | 155 |
Hydrogen-bond geometry (Å, °)
| H⋯ | ||||
|---|---|---|---|---|
| N1—H1⋯O2i | 0.86 | 2.13 | 2.9243 (14) | 153 |
| O1—H1 | 0.82 | 1.98 | 2.7852 (16) | 174 |
| N2—H12⋯O1iii | 0.89 (2) | 2.37 (2) | 3.223 (2) | 160 |
| N2—H22⋯O2iv | 0.90 (2) | 2.22 (2) | 3.056 (2) | 155 |
Symmetry codes: (i) ; (ii) ; (iii) ; (iv) .