Strong intramolecular O-H•••O hydrogen bonds in quinaldic acid N-oxide and picolinic acid N-oxide

被引:0
|
作者
Steiner, T
Schreurs, AMM
Lutz, M
Kroon, J
机构
[1] Free Univ Berlin, Inst Chem Kristallog, D-14195 Berlin, Germany
[2] Univ Utrecht, Dept Crystal & Struct Chem, Bijvoet Ctr Biomol Res, NL-3584 CH Utrecht, Netherlands
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中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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) Angstrom in picolinic acid N-oxide (2-carboxypyridine N-oxide), C6H5NO3, (I), and 2.435 (2) Angstrom 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.
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页码:577 / 579
页数:3
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