کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1306519 | 975094 | 2011 | 7 صفحه PDF | دانلود رایگان |
A mononuclear octahedral nickel(II) complex [Ni(HL1)2](SCN)2 (1) and an unusual penta-nuclear complex [{(NiL2)(μ-SCN)}4Ni(NCS)2]·2CH3CN (2) where HL1 = 3-(2-aminoethylimino)butan-2-one oxime and HL2 = 3-(hydroxyimino)butan-2-ylidene)amino)propylimino)butan-2-one oxime have been prepared and characterized by X-ray crystallography. The mono-condensed ligand, HL1, was prepared by the 1:1 condensation of the 1,2-diaminoethane with diacetylmonoxime in methanol under high dilution. Complex 1 is found to be a mer isomer and the amine hydrogen atoms are involved in extensive hydrogen bonding with the thiocyanate anions. The dicondensed ligand, HL2, was prepared by the 1:2 condensation of the 1,3-diaminopropane with diacetylmonoxime in methanol. The central nickel(II) in 2 is coordinated by six nitrogen atoms of six thiocyanate groups, four of which utilize their sulphur atoms to connect four NiL2 moieties to form a penta-nuclear complex and it is unique in the sense that this is the first thiocyanato bridged penta-nuclear nickel(II) compound with Schiff base ligands.
A mononuclear octahedral Ni(II) complex [Ni(HL1)2](SCN)2 (1) and an unusual penta-nuclear [{(NiL2)(μ-SCN)}4Ni(NCS)2]·2CH3CN (2) where HL1 = 3-(2-aminoethylimino)butan-2-one oxime and HL2 = 3-(hydroxyimino)butan-2-ylidene)amino)propylimino)butan-2-one oxime, have been prepared and structurally characterized by X-ray crystallography.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 365, Issue 1, 15 January 2011, Pages 25–31