A novel fluoride-centered triangular-bridged carboxylate complex, [Ni2Cr(μ3-F)(O2CtBu)6(HO2CtBu)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(μ3-F)(O2CtBu)6(C5H5N)3] (2) and [Ni2Cr(μ3-F)(O2CtBu)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 geff = 2.48.
Walsh, J., Meadows, S., Ghirri, A., Moro, F., Jennings, M., Smith, W., et al. (2015). Electronic Structure of a Mixed-Metal Fluoride-Centered Triangle Complex: A Potential Qubit Component. INORGANIC CHEMISTRY, 54(24), 12019-12026 [10.1021/acs.inorgchem.5b01898].
Electronic Structure of a Mixed-Metal Fluoride-Centered Triangle Complex: A Potential Qubit Component
Moro, Fabrizio;
2015
Abstract
A novel fluoride-centered triangular-bridged carboxylate complex, [Ni2Cr(μ3-F)(O2CtBu)6(HO2CtBu)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(μ3-F)(O2CtBu)6(C5H5N)3] (2) and [Ni2Cr(μ3-F)(O2CtBu)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 geff = 2.48.
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