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Synthesis, structure and spectroscopic properties of two new trinuclear nickel(II) clusters possessing solvent effect.

Authors
  • Dong, Wen-Kui1
  • Chen, Xiao
  • Sun, Yin-Xia
  • Yang, Yu-Hua
  • Zhao, Li
  • Xu, Li
  • Yu, Tian-Zhi
  • 1 School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China. [email protected] , (China)
Type
Published Article
Journal
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
Publication Date
Oct 15, 2009
Volume
74
Issue
3
Pages
719–725
Identifiers
DOI: 10.1016/j.saa.2009.08.037
PMID: 19740699
Source
Medline
Language
English
License
Unknown

Abstract

Two solvent-induced trinuclear nickel(II) clusters, [{NiL(CH(3)OH)}(2)(OAc)(2)Ni].2CH(3)OH (I) and [{NiL(C(2)H(5)OH)}(2)(OAc)(2)Ni].2C(2)H(5)OH (II), have been synthesized by the reaction of a new Salen-type bisoxime chelating ligand of 5,5'-di(N,N'-diethylamino)-2,2'-[(1,3-propylene)dioxybis(nitrilomethylidyne)]diphenol (H(2)L) with nickel(II) acetate tetrahydrate in different solvents. Clusters I and II were characterized by elemental analyses, IR spectra, UV-vis absorption spectra, TG-DTA and X-ray diffraction methods. In clusters I (or II), there are two ligand moieties (which provide N(2)O(2) donors), two acetate ions, two coordinated methanol (or ethanol) molecules and two crystallizing methanol (or ethanol) molecules, which result in the formation of three slightly distorted octahedral geometries around Ni(II) ions. Interestingly, nickel(II) ions in the structures of clusters I and II are all six-coordinated geometry, but clusters I and II are grown up in different solvent. Right because of this, solvent effect cause to their different crystal structures.

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