Strong intramolecular O--H...O hydrogen bonds in quinaldic acid N-oxide and picolinic acid N-oxide
Strong intramolecular O--H...O hydrogen bonds in quinaldic acid N-oxide and picolinic acid N-oxide
复制标题
喹哪啶酸 N-氧化物和吡啶甲酸 N-氧化物中具有强分子内 O--H...O 氢键
DOI:
10.1107/s0108270100001475
复制
发表时间:
2000
期刊:
影响因子:
--
通讯作者:
Kroon
中科院分区:
文献类型:
--
作者:
Steiner;Schreurs;Lutz;Kroon
The title compounds contain very short intramolecular hydrogen bonds of the type C—O—H⋯O—N. The O⋯O distances are 2.425 (2) A in picolinic acid N-oxide (2-carboxypyridine N-oxide), C6H5NO3, (I), and 2.435 (2) A in quinaldic acid N-oxide (2-carboxyquinoline N-oxide), C10H7NO3, (II). In (II), this is associated with slight molecular distortion from planarity, while in (I), such an effect cannot be observed because the molecule crystallizes on a mirror plane.