Fine-tuning of biaryl dihedral angles: structural characterization of five homologous three-atom bridged biphenyls by X-ray crystallography
作者:David J. Edwards、Robin G. Pritchard、Timothy W. Wallace
DOI:10.1107/s0108768105006713
日期:2005.6.1
11-hexamethoxydibenzo[c,e]oxepine, 6,7-dihydro-1,2,3,9,10,11-hexamethoxy-6-methyl-5H-dibenzo[c,e]azepinium chloride, 5,7-dihydro-1,2,3,9,10,11-hexamethoxydibenzo[c,e]thiepine, and the 6-oxide and 6,6-dioxide derivatives of the latter have been characterized by X-ray crystal structure analysis. Within this series the endocyclic and exocyclic biaryl dihedral angles vary over 10 degrees ranges, reflecting the
包含5,7-二氢-1,2,3,9,10,11-六甲氧基二苯并[c,e]奥西平,6,7-二氢-1,2,3,9, 10,11-六甲氧基-6-甲基-5H-二苯并[c,e] a嗪,5,7-二氢-1,2,3,9,10,11-六甲氧基二苯并[c,e]噻吩和6 X射线晶体结构分析已表征了后者的-氧化物和6,6-二氧化物衍生物。在该系列中,环内和环外联芳基二面角在10度范围内变化,反映了分子内(空间,几何)和分子间(晶体堆积)力的变化平衡,前者是微调联芳基螺旋度的潜在控制元素系统。