Electronic Structure of a Mixed-Metal Fluoride-Centered Triangle Complex: A Potential Qubit Component

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• 作者：James P. S. Walsh ; Sarah B. Meadows ; Alberto Ghirri ; Fabrizio Moro ; Martin Jennings ; William F. Smith ; Darren M. Graham ; Takumi Kihara ; Hiroyuki Nojiri ; I帽igo J. Vitorica-Yrezabal ; Grigore A. Timco ; David Collison ; Eric J. L. McInnes ; Richard E. P. Winpenny
• 刊名：Inorganic Chemistry
• 出版年：2015
• 出版时间：December 21, 2015
• 年：2015
• 卷：54
• 期：24
• 页码：12019-12026
• 全文大小：389K
• ISSN：1520-510X

文摘

A novel fluoride-centered triangular-bridged carboxylate complex, [Ni₂Cr(渭₃-F)(O₂C^tBu)₆(HO₂C^tBu)₃] (1), is reported. Simple postsynthetic substitution of the terminal pivalic acids in 1 with pyridine and 4-methylpyridine led to the isolation of [Ni₂Cr(渭₃-F)(O₂C^tBu)₆(C₅H₅N)₃] (2) and [Ni₂Cr(渭₃-F)(O₂C^tBu)₆((4-CH₃)C₅H₄N)₃] (3). Structural and magnetic characterizations carried out on the series reveal a dominating antiferromagnetic interaction between the nickel and chromium centers leading to an S = ¹/₂ ground state with a very unusual value of g_eff = 2.48.