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Issue 11, 1990
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An electron spin resonance spectral study of bis(dimethylglyoximato)-cobalt(II) and some phosphine and phosphite adducts

Abstract

E.s.r. spectra, at both X- and Q-band frequencies, were measured for frozen solutions of [Co(Hdmg)2](H2dmg = dimethylglyoxime) and its adducts with a range of fourteen phosphines and phosphites. All spectra were indicative of a 2A1[a(dz2)+b(dx2y2)] ground state, and from analysis of the cobalt and phosphorus hyperfine tensors and the g tensor, wavefunction and bonding parameters were calculated. The Q-band results unambiguously reveal rhombic symmetry for all adducts, with the formation of 1 : 1 adducts for all the bases with identical substituents and 1 : 2 adducts for the bases with mixed substituents. Attempts to assign the ground state to the [Co(Hdmg)2] complex in a diamagnetic matrix of [Ni(Hdmg)2] were also made.

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Article type: Paper
DOI: 10.1039/DT9900003311
J. Chem. Soc., Dalton Trans., 1990, 3311-3318

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    An electron spin resonance spectral study of bis(dimethylglyoximato)-cobalt(II) and some phosphine and phosphite adducts

    B. de Castro, M. Rangel and J. B. Raynor, J. Chem. Soc., Dalton Trans., 1990, 3311
    DOI: 10.1039/DT9900003311

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