| Literature DB >> 22969621 |
Min Yu1, Xing Huang, Feng Gao.
Abstract
In the title compound, C(4)H(5)NO(2), the non-H atoms are nearly coplanar, with a maximum deviation of 0.030 (1) Å. In the crystal, pairs of mol-ecules are linked by N-H⋯O hydrogen bonds into inversion dimers.Entities:
Year: 2012 PMID: 22969621 PMCID: PMC3435750 DOI: 10.1107/S1600536812035672
Source DB: PubMed Journal: Acta Crystallogr Sect E Struct Rep Online ISSN: 1600-5368
| C4H5NO2 | |
| Orthorhombic, | Mo |
| Hall symbol: -P 2ac 2ab | Cell parameters from 806 reflections |
| θ = 3.2–28.9° | |
| µ = 0.12 mm−1 | |
| Block, colourless | |
| 0.40 × 0.35 × 0.30 mm |
| Agilent Xcalibur Eos diffractometer | 915 independent reflections |
| Radiation source: Enhance (Mo) X-ray Source | 732 reflections with |
| Graphite monochromator | |
| Detector resolution: 16.0874 pixels mm-1 | θmax = 26.4°, θmin = 3.2° |
| ω scans | |
| Absorption correction: multi-scan ( | |
| 2022 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-atom parameters constrained | |
| 915 reflections | (Δ/σ)max < 0.001 |
| 64 parameters | Δρmax = 0.15 e Å−3 |
| 0 restraints | Δρmin = −0.29 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 |
| N1 | 0.04477 (16) | 0.61457 (13) | 0.39506 (9) | 0.0197 (3) | |
| H1 | 0.0772 | 0.5317 | 0.4135 | 0.024* | |
| O1 | 0.19664 (16) | 0.61963 (11) | 0.23948 (8) | 0.0291 (3) | |
| O2 | −0.13630 (16) | 0.66055 (12) | 0.53572 (8) | 0.0312 (3) | |
| C2 | 0.0226 (2) | 0.82282 (15) | 0.30007 (12) | 0.0211 (4) | |
| H2A | −0.0546 | 0.8346 | 0.2395 | 0.025* | |
| H2B | 0.1184 | 0.8924 | 0.2979 | 0.025* | |
| C1 | 0.10102 (19) | 0.67648 (15) | 0.30357 (12) | 0.0197 (4) | |
| C4 | −0.0668 (2) | 0.69665 (16) | 0.45340 (11) | 0.0204 (4) | |
| C3 | −0.0874 (2) | 0.83593 (16) | 0.40006 (11) | 0.0230 (4) | |
| H3A | −0.0403 | 0.9108 | 0.4434 | 0.028* | |
| H3B | −0.2139 | 0.8549 | 0.3847 | 0.028* |
| N1 | 0.0206 (6) | 0.0160 (6) | 0.0226 (7) | 0.0026 (5) | −0.0004 (5) | 0.0014 (5) |
| O1 | 0.0309 (6) | 0.0239 (6) | 0.0325 (6) | −0.0004 (5) | 0.0126 (5) | −0.0002 (5) |
| O2 | 0.0430 (7) | 0.0274 (6) | 0.0232 (6) | 0.0118 (6) | 0.0087 (6) | 0.0049 (5) |
| C2 | 0.0215 (7) | 0.0171 (7) | 0.0248 (8) | −0.0011 (6) | −0.0004 (6) | 0.0020 (6) |
| C1 | 0.0173 (7) | 0.0186 (8) | 0.0231 (7) | −0.0044 (6) | 0.0000 (6) | 0.0002 (6) |
| C4 | 0.0221 (7) | 0.0196 (7) | 0.0194 (8) | 0.0021 (6) | −0.0023 (6) | −0.0016 (6) |
| C3 | 0.0301 (8) | 0.0167 (7) | 0.0222 (8) | 0.0015 (7) | 0.0003 (7) | −0.0012 (6) |
| N1—H1 | 0.8600 | C2—H2B | 0.9700 |
| N1—C1 | 1.3796 (19) | C2—C1 | 1.513 (2) |
| N1—C4 | 1.3609 (19) | C2—C3 | 1.524 (2) |
| O1—C1 | 1.2121 (17) | C4—C3 | 1.504 (2) |
| O2—C4 | 1.2246 (18) | C3—H3A | 0.9700 |
| C2—H2A | 0.9700 | C3—H3B | 0.9700 |
| C1—N1—H1 | 123.1 | O1—C1—C2 | 127.99 (14) |
| C4—N1—H1 | 123.1 | N1—C4—C3 | 108.61 (12) |
| C4—N1—C1 | 113.83 (13) | O2—C4—N1 | 124.48 (14) |
| H2A—C2—H2B | 108.9 | O2—C4—C3 | 126.91 (14) |
| C1—C2—H2A | 110.8 | C2—C3—H3A | 110.8 |
| C1—C2—H2B | 110.8 | C2—C3—H3B | 110.8 |
| C1—C2—C3 | 104.70 (12) | C4—C3—C2 | 104.96 (12) |
| C3—C2—H2A | 110.8 | C4—C3—H3A | 110.8 |
| C3—C2—H2B | 110.8 | C4—C3—H3B | 110.8 |
| N1—C1—C2 | 107.85 (12) | H3A—C3—H3B | 108.8 |
| O1—C1—N1 | 124.16 (14) | ||
| N1—C4—C3—C2 | 1.90 (16) | C4—N1—C1—O1 | −177.92 (14) |
| O2—C4—C3—C2 | −178.47 (14) | C4—N1—C1—C2 | 2.11 (16) |
| C1—N1—C4—O2 | 177.78 (14) | C3—C2—C1—N1 | −0.75 (15) |
| C1—N1—C4—C3 | −2.58 (17) | C3—C2—C1—O1 | 179.29 (15) |
| C1—C2—C3—C4 | −0.66 (15) |
| H··· | ||||
| N1—H1···O2i | 0.86 | 2.00 | 2.8548 (16) | 176 |
Hydrogen-bond geometry (Å, °)
|
|
| H⋯ |
|
|
|---|---|---|---|---|
| N1—H1⋯O2i | 0.86 | 2.00 | 2.8548 (16) | 176 |
Symmetry code: (i) .