2-Amino-5-methyl-1,3,4-thiadiazole and 2-amino-5-ethyl-1,3,4-thiadiazole

被引：11

作者：

Lynch, DE ^{[1
]}

机构：

[1] Coventry Univ, Sch Sci & Environm, Coventry CV1 5FB, W Midlands, England

来源：

ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY | 2001年 / 57卷

关键词：

D O I：

10.1107/S0108270101011817

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The structures of 2-amino-5-methyl-1,3,4-thiadiazole, C3H5N3S, and 2-amino-5-ethyl-1,3,4-thiadiazole, C4H7N3S, have been determined for comparison with unsubstituted 2-amino-1,3,4-thiadiazole. Despite their different space groups (P21/n and Pbca, respectively), the packing modes of the methyl and ethyl derivatives are similar, with comparable three-dimensional hydrogen-bonding associations. This is in contrast to the hydrogen-bonding network in 2-amino-1,3,4-thiadiazole, which is one-dimensional and has denser packing. It is shown that both packing forms are different polymorphs of a specific subunit of each array.

引用

页码：1201 / 1203

页数：3

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