Synthesis of Iron and Cobalt Complexes of a Ferrocene-Linked Diphosphinoamide Ligand and Characterization of a Weak Iron–Cobalt Interaction

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• 作者：Fraser S. Pick ; John R. Thompson ; Didier S. Savard ; Daniel B. Leznoff ; Michael D. Fryzuk
• 刊名：Inorganic Chemistry
• 出版年：2016
• 出版时间：April 18, 2016
• 年：2016
• 卷：55
• 期：8
• 页码：4059-4067
• 全文大小：567K
• 年卷期：0
• ISSN：1520-510X

文摘

A ferrocene-based bis(phosphinoamine) fc(NHPⁱPr₂)₂ has been deprotonated and used in salt metathesis reactions to form dimeric complexes ([fc(NPⁱPr₂)₂]M)₂ (M = Fe, Co). A novel coordination environment for Co(II) is observed including a weak but significant Fe–Co interaction, which was characterized using X-ray crystallography, Mössbauer spectroscopy, and VT-magnetometry. Density functional theory (DFT) calculations including natural bond order analysis provides further support for the interaction and suggests a combination of Fe → Co and Co → Fe interactions.