Structural studies of three isomeric forms of heterocyclic N(4)-substituted thiosemicarbazones and two nickel(II) complexes

被引：178

作者：

West, DX

Bain, GA

Butcher, RJ

Jasinski, JP

Li, Y

Pozdniakiv, RY

ValdesMartinez, J

Toscano, RA

HernandezOrtega, S

机构：

[1] HOWARD UNIV, DEPT CHEM, WASHINGTON, DC 20059 USA

[2] KEENE STATE COLL, DEPT CHEM, KEENE, NH 03431 USA

[3] UNIV NACL AUTONOMA MEXICO, INST QUIM, COYOACAN 04510, DF, ARGENTINA

来源：

POLYHEDRON | 1996年 / 15卷 / 04期

关键词：

D O I：

10.1016/0277-5387(95)00298-7

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Three structural forms have been isolated among four 2-formyl- and 2-acetylpyridine N(4)-substituted thiosemicarbazones reported. 2-Formylpyridine N(4)-methylthiosemicarbazone and 2-acetylpyridine N(4)-ethylthiosemicarbazone both exist as nonhydrogen bonding E isomers. 2-Formylpyridine 3-azabicyclo[3.2.2]nonylthiosemicarbazone crystallizes as a hydrogen bonding Z isomer. The yellow 2-acetylpyridine 3-hexamethyleneiminylthiosemicarbazone crystallized with a bifurcated hydrogen bonding arrangement in which the N(3) hydrogen is formally positioned at N(2), making it tautomeric to the other two forms. Structures of four-coordinate nickel(II) complexes containing the monoanions of 2-formylpyridine 3-azabicyclo[3.2.2]nonylthiosemicarbazone and acetylpyrazine 3-hexamethyleneiminylthiosemicarbazone are included.

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页码：665 / 674

页数：10

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