Some complexes of s-triazine with cobalt(II) halides

Abstract

The isolation of eight new complexes of bivalent cobalt with s-triazine of general formula CoX 2(trz) n(H 2O)m(where X = Cl, n= 1, m = 1 or 3; n= 2, m = 1; X = Br, n = 1, m = 0; n = 2, m = 0 or 2; X = I, n = 2, m = 0; X = NCS, n = 4, m = 1) is reported. The proposed four- and six-coordinate stereochemistries of these products are assigned after consideration of microanalyses, visible absorption spectra and magnetic moment data. In the main the complexes are stable only in the solid state below room temperature and in the absence of moisture. There is some evidence for a strong interaction between water and s-triazine in the Cl and NCS compounds.