Coordination chemistry of higher oxidation states. Part 15. Cobalt(III) complexes of bi- and multi-dentate phenylphosphines |
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| Authors: | Annette L. Hale Hilary C. Jewiss William Levason |
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| Affiliation: | Department of Chemistry, The University, Southampton S09, U.K. |
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| Abstract: | Six-coordinate cobalt(III) complex trans-[Co{o-C6H4(PPh2)2}2X2]ClO4, fac-[Co{PhP(CH2CH2PPh2)2}X3],cis-[Co{P(CH2CH2PPh2)3}X2]ClO4 and cis-β-[Co{-CH2P(Ph)CH2CH2PPh2}2X2]PF6 (X = Cl, Br) have been prepared by halogen oxidation of the Co(II) analogues, and characterised by IR, electronic and 31P NMR spectroscopy. The failure to obtain complexes with X = I, and with some related ligands is discussed, and the rather low stability of the above complexes is rationalised in terms of steric crowding at the metal centre. |
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| Keywords: | Author to whom correspondence should be addressed. |
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