Structure investigations on 4-halo-1,2,3,5-dithiadiazolyl radicals XCNSSN• (X = F, Cl, Br):: The shortest intradimer S•••S distance in dithiadiazolyl dimers

被引：19

作者：

Knapp, C ^{[1
]}

Lork, E ^{[1
]}

Gupta, K ^{[1
]}

Mews, R ^{[1
]}

机构：

[1] Univ Bremen, Inst Anorgan & Phys Chem, D-28334 Bremen, Germany

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2005年 / 631卷 / 09期

关键词：

1,2,3,5-dithiadiazoles; radicals; crystal structures; sulfur-nitrogen; polymorphism;

D O I：

10.1002/zaac.200500052

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Crystals of the 4-halo-1,2,3,5-dithiadiazolyl radicals (X = F, Cl, Br) were obtained by sublimation at 80 degrees C and 10(-2) Torr, and the structures were determined by X-ray diffraction. The fluoro derivative crystallizes as a cisoid dimer in the space group P2(1)/n, whereas the chloro and bromo derivatives crystallize isomorphous as twisted dimers in the space group C2/c. The chloro and bromo derivatives show the shortest intradimer S center dot center dot center dot S contacts of all known 1,2,3,5-dithiadiazolyl dimers. In addition the obtained structure of CICN(2)S(2)center dot represents the fifth polymorph of ClCN(2)S(2)center dot characterized by X-ray crystallography. The structures and the packing including secondary interactions are discussed.

引用

页码：1640 / 1644

页数：5

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