Abstract
Thirty complexes of diacetamide with divalent transition metal salts have been isolated. Some of the more unusual features of these complexes are: complexation of diacetamide in both the cis-trans and trans-trans forms and the formation of the unusual tetrahedral anionic species Co 2Br = 6 and Co 2Cl = 6. The greatest number of complexes were prepared with CoBr = 2: [Co(DA) 4(H 2O) 2]Br 2, [Co(DA) 3]Br 2, [Co(DA) 3][CoBr 4] and [Co(DA) 3][Co 2Br 6]. All of the configurations in these and the other compounds were deduced from visible spectra and were supported via infra-red and magnetic susceptibility data. The complexes of other Co(II), Ni(II), Fe(II), and Mn(II) salts all contain octahedrally co-ordinated central metal ions.
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