Issue 1, 1988

Low-spin six-co-ordinate cobalt(II) complexes. A solution study of tris(violurato)cobaltate(II) ions

Abstract

The formation of complexes of CoII with violuric acid (1H,3H-pyrimidine-2,4,5,6-tetrone 5-oxime), H3vi, and its monomethyl (H2mvi) and dimethyl (Hdmvi) derivatives in dimethyl sulphoxide–water (80 : 20) has been investigated. Potentiometric, calorimetric, magnetic, and e.s.r. measurements clearly evidence that [Co(H2vi)3], [Co(Hmvi)3], and [Co(dmvi)3] are low-spin octahedral complexes. The high spin–low spin change occurs upon binding of the third ligand.

Article information

Article type
Paper

J. Chem. Soc., Dalton Trans., 1988, 101-104

Low-spin six-co-ordinate cobalt(II) complexes. A solution study of tris(violurato)cobaltate(II) ions

E. Garcia–España, M. Ballester, F. Lloret, J. M. Moratal, J. Faus and A. Bianchi, J. Chem. Soc., Dalton Trans., 1988, 101 DOI: 10.1039/DT9880000101

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