title: Synthesis, structure and spectroscopic properties of two new trinuclear nickel(II) clusters possessing solvent effect.
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.
authors.affiliation: School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China. dongwk@mail.lzjtu.cn
authors.forename: Wen-Kui
authors.initials: WK
authors.lastname: Dong
authors.forename: Xiao
authors.initials: X
authors.lastname: Chen
authors.forename: Yin-Xia
authors.initials: YX
authors.lastname: Sun
authors.forename: Yu-Hua
authors.initials: YH
authors.lastname: Yang
authors.forename: Li
authors.initials: L
authors.lastname: Zhao
authors.forename: Li
authors.initials: L
authors.lastname: Xu
authors.forename: Tian-Zhi
authors.initials: TZ
authors.lastname: Yu
mesh_terms: D018360:Crystallography, X-Ray; D008958:Models, Molecular; D009532:Nickel / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D013053:Spectrophotometry; D013055:Spectrophotometry, Infrared; D013057:Spectrum Analysis
chemical_list: D012997:Solvents; D009532:Nickel