作者:F. Dumitraşcu、M. R. Caira、C. Drâghici、M. T. Câproiu、L. Barbu、A. Bâdoiu
DOI:10.1007/s10870-005-1672-3
日期:2005.5
was to confirm by X-ray analysis the phenomenon of helical chirality inferred from solution 1H-NMR data for a series of derivatives based on the novel pyrrolo[1,2-a][1,10]phenanthroline system. The syntheses of the title compounds and their 1H-NMR data are presented. Crystals of the representative compound ethyl, 1-(4-phenylbenzoyl)-pyrrolo[1,2-a][1,10]phenanthroline-3-carboxylate, with molecular formula
该研究的目的是通过 X 射线分析确认从溶液 1H-NMR 数据推断出的螺旋手性现象,这些数据是基于新型吡咯并 [1,2-a][1,10] 菲咯啉系统的一系列衍生物。提供了标题化合物的合成及其 1 H-NMR 数据。发现代表性化合物乙基,1-(4-苯基苯甲酰基)-吡咯并[1,2-a][1,10]菲咯啉-3-羧酸酯的晶体,分子式为C31H22N2O3,在三斜晶系、空间群中结晶P 1 a = 7.8541(1), b = 11.2605(2), c = 13.4093(3) Å, α = 92.244(1), β = 90.292(1), γ = 106.475(1)∘ and Z = 2 . X 射线分析揭示了菲咯啉系统的预测螺旋度及其起源,即吡啶 N 原子和苯基苯甲酰基残基的羰基 C 原子的接近度,非键合距离 N ⋅ s C 仅为 2.465(2) Å。次要但显着的变形,包括羰基 C 原子从吡咯环的位移超过