The conformational properties of and intramolecular hydrogen-bonding in dithia[3.3]metacyclophanes carrying one or two amino groups on their internal positions were examined by their 1H-NMR and IR spectra and by X-ray structural analyses. It was suggested that an intramolecular hydrogen-bonding network between the amino protons and bridge sulfur atoms is closely related to the conformations of the cyclophanes. Crystal structural analyses of dithia[3.3]metacyclophanes carrying an amino and a nitro group on their internal positions were also carried out. It has been found that the molecules assemble as one-dimensional array columns in the crystal owing to the intermolecular π–π interaction and this columnar structure is deformed by the occurrence of intermolecular hydrogen-bonding.
通过 1H-NMR 和红外光谱以及 X 射线结构分析,研究了内部位置带有一个或两个
氨基的二
硫杂[3.3]偏环烷的构象特性和分子内氢键。研究表明,
氨基质子和桥
硫原子之间的分子内氢键网络与环烷的构象密切相关。此外,还对内部位置带有
氨基和硝基的二
硫杂[3.3]偏环烷进行了晶体结构分析。研究发现,由于分子间的π-π相互作用,分子在晶体中组合成一维阵列柱,这种柱状结构会因分子间氢键的发生而变形。