Crystal structure of 4-hydroxy-2-methyl-5H-nephthol[1′,2′,5,6]pyrano [4,3-b]pyridin-5-one:: a new heterohelicane

被引：0
|
作者：
Kettmann, V [1 ]
Svetlík, J [1 ]
机构：
[1] Comenius Univ, Fac Pharm, Dept Pharmaceut Anal & Nucl Pharm, SK-83232 Bratislava, Slovakia
来源：
JOURNAL OF CHEMICAL RESEARCH-S | 2005年 / 02期
关键词：
crystal structure; helicene; fused naphthalenes; pyrans; pyridines; hydrogen bonds;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
X-ray analysis of the title compound reveals that the molecule relieves steric strain in the fjord region by small adjustments of some bonding parameters rather than any remarkable helical twist. The results show that a (C-)(HN)-N-... contact shorter than the van der Waals radii of the H and N atoms is an energetically favourable interaction.
引用
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页码：86 / 87
页数：2
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