Synthesis and characterization of [Me₂NC(S)NP(S)(OiPr)₂]⁻ complexes of Co(II), Ni(II), Zn(II) and Cd(II)

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• 作者：Damir A. Safin ; Michael Bolte ; Maria G. Babashkina ; Henryk Kozlowski
• 关键词：Cobalt ; Nickel ; Zinc ; Cadmium ; N-thiophosphorylthiourea ; Crystal structures
• 刊名：Polyhedron
• 出版年：2010
• 出版时间：13 January 2010
• 年：2010
• 卷：29
• 期：1
• 页码：488-492
• 全文大小：369 K

文摘

Reaction of the potassium salt of N-thiophosphorylthiourea Me₂NC(S)NHP(S)(OiPr)₂ (HL) with Co(II), Ni(II), Zn(II) and Cd(II) cations in aqueous EtOH leads to M(L-S,S′)₂ (ML₂) chelate complexes. The structures of the resulting compounds were studied by IR, UV–Vis, ¹H, ³¹P{¹H} NMR spectroscopy and microanalysis. The metal center is found in a tetrahedral environment in complexes CoL₂, ZnL₂, CdL₂ and square-planar in NiL₂ formed by the CS and PS sulfur atoms of two deprotonated ligands L. According to the NMR and UV–Vis spectroscopy data it was established that the metal cation of NiL₂ is in a square-planar environment in CH₂Cl₂, CHCl₃ and C₆H₆, whereas NiL₂ shows features of tetrahedral or octahedral complexes in acetone, DMSO and DMF. Molecular structures of complexes were elucidated by single crystal X-ray diffraction analysis.