Structure and Bonding of the Manganese(II) Phosphide Complex (t-BuPH2)(畏5-Cp)Mn{渭-(t-BuPH)}2Mn(Cp)(t-BuPH2)

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• 作者：Francesca A. Stokes ; Robert J. Less ; Joanna Haywood ; Rebecca L. Melen ; Richard I. Thompson ; Andrew E. H. Wheatley ; Dominic S. Wright ; Adam Johannes Johansson ; Lars Kloo
• 刊名：Organometallics
• 出版年：2012
• 出版时间：January 9, 2012
• 年：2012
• 卷：31
• 期：1
• 页码：23-26
• 全文大小：239K
• 年卷期：v.31,no.1(January 9, 2012)
• ISSN：1520-6041

文摘

Rather than achieving bis-deprotonation of the phosphine, reaction of Cp₂Mn (Cp = cyclopentadienyl) with t-BuPH₂ at room temperature yields monodeprotonation of half of the available phosphine in the product (t-BuPH₂)(畏⁵-Cp)Mn{渭-(t-BuPH)}₂Mn(Cp)(t-BuPH₂) (1). This complex comprises a Mn(II) phosphide and is a dimer in the solid state, containing a Mn₂P₂ diamond core. Consistent with the observation of a relatively short intermetal distance of 2.8717(4) 脜 in 1, DFT analysis of the full structure points to a singlet ground state stabilized by a direct Mn鈥揗n single bond. This is in line with the diamagnetic character of 1 and an 18-electron count at Mn.