Heptacoordinated Molybdenum(VI) Complexes of Phenylenediamine Bis(phenolate): A Stable Molybdenum Amidophenoxide Radical

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• 作者：Mikko M. H盲nninen ; Petriina Paturi ; Heikki M. Tuononen ; Reijo Sillanp盲盲 ; Ari Lehtonen
• 刊名：Inorganic Chemistry
• 出版年：2013
• 出版时间：May 20, 2013
• 年：2013
• 卷：52
• 期：10
• 页码：5714-5721
• 全文大小：364K
• 年卷期：v.52,no.10(May 20, 2013)
• ISSN：1520-510X

文摘

The syntheses, crystallographic structures, magnetic properties, and theoretical studies of two heptacoordinated molybdenum complexes with N,N鈥?bis(3,5-di-tert-butyl-2-hydroxyphenyl)-1,2-phenylenediamine (H₄N₂O₂) are reported. A formally molybdenum(VI) complex [Mo(N₂O₂)Cl₂(dmf)] (1) was synthesized by the reaction between [MoO₂Cl₂(dmf)₂] and H₄N₂O₂, whereas the other molybdenum(VI) complex [Mo(N₂O₂)(HN₂O₂)] (2) was formed when [MoO₂(acac)₂] was used as a molybdenum source. Both complexes represent a rare case of the Mo^VI ion without any multiply bonded terminal ligands. In addition, molecular structures, magnetic measurements, ESR spectroscopy, and density functional theory calculations indicate that complex 2 is the first stable molybdenum(VI) amidophenoxide radical.