A new coordination mode for tris(2-carboxyethyl)phosphine: Synthesis, crystal structure and characterization of the mixed-valence Co(III)/Co(II)/Co(III) complex [Co{P(CH₂CH₂COO)<

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• 作者：D. Andrew Knight ; Jeffrey R. Deschamps ; Ray J. Butcher ; Christa Simmers ; Eddie L. Chang
• 关键词：Water-soluble phosphine ; Mixed valence complex
• 刊名：Polyhedron
• 出版年：2008
• 期刊代码：87_02775387
• 类别：ch
• 出版时间：25 April 2008
• 卷：27
• 期：6
• 页码：1795-1801
• 文件大小：359 K

摘要

The water-soluble chelating phosphine ligand tris(2-carboxyethyl)phosphine (TCEP) reacts with cobalt(II) chloride in water to give the mixed-valence Co(III)/Co(II)/Co(III) complex [Co{P(CH₂CH₂COO)₂(CH₂CH₂COOH)}₂]₂[Co(H₂O)₄][Na₂(H₂O)₄]Cl₂ · 6H₂O (1). Structural analysis of 1 using single-crystal X-ray diffraction reveals a trimetallic sodium bridged structure in which TCEP adopts a tridentate chelating mode towards Co(III), and a bridging mode towards Co(II) and Na ions.