THIOOXALIC ACID 2-AMIDE-1-HYDRAZIDE-2-HYDRAZONE

被引：5

作者：

HEINEMANN, FW ^{[1
]}

HARTUNG, H ^{[1
]}

DEHNE, H ^{[1
]}

SCHUENEMANN, A ^{[1
]}

机构：

[1] UNIV ROSTOCK,FACHBEREICH CHEM,D-18055 ROSTOCK,GERMANY

来源：

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 1995年 / 51卷

关键词：

D O I：

10.1107/S0108270194005494

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The results of an X-ray analysis reveal that the title compound, C2H7N5S, has zwitterionic character (2), instead of the initially assumed form of a neutral tautomer (1). The bonding in (2) can be described as a resonance of several dipolar limiting structures. Their particular contributions to the zwitterionic resonance hybrid were estimated through calculations using the HOSE model based on the observed bond lengths. The two predominant resonance contributors, together with four intramolecular hydrogen bonds, account for the almost perfect planarity of the molecules.

引用

页码：442 / 445

页数：4

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