Synthesis and structural studies on di-oxovanadium(V) complexes of N(4)-substituted pyrazole based thiosemicarbazones

Hazra A; Barik AK; Pal S; Gupta S; Roy S; Butcher RJ; Peng SM; Lee GH; Kar SK

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Synthesis and structural studies on di-oxovanadium(V) complexes of N(4)-substituted pyrazole based thiosemicarbazones

机译：N（4）-取代的吡唑基硫代半脲酮的二氧钒钒（V）配合物的合成和结构研究

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Three mononuclear cis-dioxovanadium(V) complexes of tridentate thiosemicarbazones derived from 5-methyl-3-formylpyrazole (MPA) and N(4) -methyl/ethyl/dimethyl thiosemicarbazide have been synthesized and characterized. Single crystal X-ray analyses were performed with [VO2L1] (1), [VO2L2] (2) and [VO2L3] (3), where L-1, L-2 and L-3 denote the [1 + 1] thiosemicarbazone mono-anions derived from MPA and N(4)-substituted methyl/ethyl/dimethyl thiosemicarbazide respectively. In all the complexes the vanadium atom is in a distorted square pyramidal geometry with a N2SO2 chromophore. The interesting finding in the work is that in complexes 1 and 2, the thioimine nitrogen unusually participates in coordination whereas in 3 it is the azomethine nitrogen (quite usual) which is involved in the coordination process. (c) 2006 Elsevier Ltd. All rights reserved.

机译：合成和表征了由5-甲基-3-甲酰基吡唑（MPA）和N（4）-甲基/乙基/二甲基硫代氨基脲生成的三齿硫代半氨基唑的三种单核顺式-二氧杂钒（V）配合物。用[VO2L1]（1），[VO2L2]（2）和[VO2L3]（3）进行单晶X射线分析，其中L-1，L-2和L-3表示[1 + 1]硫代半碳酸钠分别衍生自MPA和N（4）取代的甲基/乙基/二甲基硫代氨基脲的单阴离子。在所有络合物中，钒原子呈扭曲的方形锥体形状，带有N2SO2发色团。这项工作中有趣的发现是，在配合物1和2中，硫亚胺氮异常地参与配位，而在配合物3中，偶氮甲胺氮（非常常见）参与了配位过程。（c）2006 Elsevier Ltd.保留所有权利。

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《Polyhedron: The International Journal for Inorganic and Organometallic Chemistry》 |2007年第4期|共9页
作者
Hazra A; Barik AK; Pal S; Gupta S; Roy S; Butcher RJ; Peng SM; Lee GH; Kar SK;
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正文语种 eng
中图分类化学;
关键词
vanadium(V); spectral properties; crystal structure; co-crystals; 5-methyl-3-formyl-N(4)-methyl/ethyl/dimethyI thiosemicarbazones; CRYSTAL-STRUCTURE; OXOVANADIUM(V) COMPLEXES; VANADIUM BROMOPEROXIDASE; NICKEL(II) COMPLEXES; BLOOD-CELLS; DIOXOVANADIUM(V); HALOPEROXIDASE; DERIVATIVES; COPPER(II); REACTIVITY;

机译：钒（V）;光谱性质;晶体结构;共晶体;5-甲基-3-甲酰基-N（4）-甲基/乙基/二甲基硫代半缩氨基甲酰胺;晶体结构;氧钒（V）络合物;钒溴代肟酸酯;NICKEL（ II）络合物;血液细胞;二氧钒（V）;卤代过氧化物酶;衍生物;铜（II）;反应性;

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1. Synthesis and structural studies on di-oxovanadium(V) complexes of N(4)-substituted pyrazole based thiosemicarbazones [J] . Hazra A, Barik AK, Pal S, Polyhedron: The International Journal for Inorganic and Organometallic Chemistry . 2007,第4期

机译：N（4）-取代的吡唑基硫代半脲酮的二氧钒钒（V）配合物的合成和结构研究
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Synthesis and structural studies on di-oxovanadium(V) complexes of N(4)-substituted pyrazole based thiosemicarbazones

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