Crystal Structure of Monoprotonated Ni(II) Nitrilotriacetate Tetrahydrate |
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| Authors: | Petrenko P A Gdaniec M Simonov Yu A Stavila V G Gulea A P |
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| Institution: | (1) Institute of Applied Physics, Academy of Sciences of Moldova, Chisinau, Moldova;(2) Mickiewicz University, Poznan, Poland;(3) Moldova State University, Chisinau, Moldova |
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| Abstract: | A Ni(II) complex of the composition Ni(HNta) · 4H2O (I) was synthesized. Its structure was found to consist of neutral mononuclear Ni(HNta)(H2O)3] complexes and crystallization water molecules. The Ni atom has octahedral surrounding and is coordinated to tridentate-chelate HNta2– ligand through the N atom and O atoms of two deprotonated acetate groups and through the O atoms of three water molecules. The structure of I was compared with those of the Zn(HNta) · 4H2O and Co(HNta) · 4H2O complexes isostructural to I. Thermogravimetric method showed that the decomposition of compound I occurs through several successive stages of dehydration, deaquation, decarboxylation, and the formation of inorganic residue. |
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