Concentration effects in solid-state CD spectra of chiral atropisomeric compounds
Concentration effects in solid-state CD spectra of chiral atropisomeric compounds
复制标题
手性阻转异构体化合物固态圆二色光谱中的浓度效应
DOI：
10.1039/c1nj20185a
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发表时间：
2011-01-01
影响因子：
3.3
通讯作者：
Zhao, Yufen
中科院分区：
文献类型：
--
作者：
Ding, Lei;Lin, Lirong;Zhao, Yufen
阻转异构是立体化学的基本概念之一。镜像对称性破缺（MSB）导致的立体化学不稳定阻转异构体的手性晶体只能通过固态手性光学技术来表征。本文研究了六种阻转异构体化合物（大部分是从MSB中得到的）的固态圆二色谱和紫外-可见光谱。发现了一种包括波长漂移和反浓度依赖性的浓度效应，并从吸收平坦效应、散射效应和分子结构的扭转效应对该效应进行了初步解释。
Atropisomerism is one of the basic concepts in stereochemistry. Chiral crystals of stereochemically labile atropisomers that originated from Mirror Symmetry Breaking (MSB) can only be characterized by solid-state chiroptical techniques. Herein, solid-state circular dichroism and UV-Vis spectra of six atropisomeric compounds (most of them were obtained from MSB) have been studied. A concentration effect including a wavelength shift and inverse concentration-dependence has been found and preliminarily explained by the absorption flattening effect, scattering effect and the torsion in the molecular structures.