Short intermolecular S...S contacts in a reaction product from the cyclic sulfate ester of dimethyl L-tartrate and 2-thioxo-1,3-dithiole-4,5-dithiolate.
作者:Turan Ozturk、David C. Povey、John D. Wallis
DOI:10.1016/s0040-4020(01)89422-9
日期:1994.1
Cyclic sulfate ester 6 reacts with dithiolate 4 to give dl cyclic products 8 and 9. The crystal of 9 shows two short S...S intermolecular interaction (<3.4 Å) between trithiocarbonate groups, due to cooperative polarisations and the highly asymmetric shape of the bonded S atom. The latter effect is mainly responsible for the ‘short’ S...S contacts in ET's radical cation salts. In contrast to similar
环状硫酸酯6发生反应与二硫醇4,得到DL环状产物8和9。9的晶体显示三硫代碳酸酯基团之间存在两个短的S ... S分子间相互作用(<3.4Å),这是由于合作极化和键合S原子的高度不对称形状所致。后一种效应主要是由于ET自由基阳离子盐中的“短” S ... S接触所致。与类似的系统相反,9中六元环的sp 3 C原子被置换到二硫醇平面的同一侧。