New Functional Hexahelicenes − Synthesis, Chiroptical Properties, X-ray Crystal Structures, and Comparative Data Bank Analysis of Hexahelicenes
作者:Claudia Wachsmann、Edwin Weber、Mátyás Czugler、Wilhelm Seichter
DOI:10.1002/ejoc.200300084
日期:2003.8
(3−7, 9, 10) containing different functional group substituents have been synthesized and, in three cases (4, 8, 10), optically resolved. Optical rotations were measured and CD spectra are reported. X-ray crystal structures of the helicenes 1, 3, 4, 8, and 9 have been determined, of which 4 represents a 1:1 clathrate with acetone. These show a concerted interplay of C−H···O, C−H···π, and π···π supramolecular
已经合成了七个含有不同官能团取代基的新六螺旋烯 (3-7, 9, 10),并在三种情况下 (4, 8, 10) 进行了光学拆分。测量旋光度并报告CD光谱。已经确定了螺旋 1、3、4、8 和 9 的 X 射线晶体结构,其中 4 表示与丙酮的 1:1 包合物。这些显示了填料中 C−H···O、C−H···π 和 π···π 超分子相互作用的协同相互作用,主要产生分子堆叠 (1, 3, 4, 8)。对这些和相关晶体结构中的分子尺寸进行统计分析,以确定与宏观现象相关的潜在参数,包括旋光度。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)