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Issue 8-9, 1972
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Magnetic anisotropy and second-order crystal fields in some tetragonally distorted tetrahedral cobalt(II) ions

M. Gerloch,  J. Lewis  and  R. Rickards 

Abstract

The principal and average magnetic moments of Cs3CoX5 and (Et4N)2CoX4, [X = Cl, Br] have been measured in the temperature range 80–300 K. Magnetic transitions showing small hysteresis effects are found for both tetraethylammonium salts. The results are correlated with a point-charge model of D2d symmetry by use of the complete spin-quartet basis, and with previously reported zero-field-splitting parameters for the two caesium salts. Distortions are very similar in the chlorides and bromides as are effective spin–orbit coupling parameters and orbital reduction factors. The most important observation is that all spectral and magnetic properties in formal tetrahedral cobalt(II) ions are extremely insensitive to the second-order crystal-field parameter, Cp.

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Article type: Paper
DOI: 10.1039/DT9720000980
Citation: J. Chem. Soc., Dalton Trans., 1972,0, 980-986
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    Magnetic anisotropy and second-order crystal fields in some tetragonally distorted tetrahedral cobalt(II) ions

    M. Gerloch, J. Lewis and R. Rickards, J. Chem. Soc., Dalton Trans., 1972, 0, 980
    DOI: 10.1039/DT9720000980

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