1,2,3,5-Dithiadiazolyls and 1,2,3,5-diselenadiazolyls; stacking and packing of π-dimers

被引:29
作者
Beer, Leanne [1 ]
Cordes, A. Wallace [2 ]
Myles, Daniel J. T. [1 ]
Oakley, Richard T. [1 ]
Taylor, Nicholas J. [1 ]
机构
[1] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada
[2] Univ Arkansas, Dept Chem & Biochem, Fayetteville, AR 72701 USA
来源
CRYSTENGCOMM | 2000年 / 20期
关键词
D O I
10.1039/b004875p
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
1,2,3,5-Dithiadiazolyl and 1,2,3,5-diselenadiazolyl radicals bearing a 2,5-difluorophenyl substituent crystallize as pi-stacked dimers. In the S-compound the dimer stacks adopt a pinwheel arrangement about a 41 axis with a series of close trans-columnar S---S contacts. In the Se-compound the dimer stacks are packed in a non-centric dovetailed arrangement. The preference for the latter pattern is dictated by structure-making intermolecular F---Se contacts.
引用
收藏
页码:109 / 114
页数:6
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