The co-ordinating ability of the two, tripod like, ligands 1,1,1-tris(dimethylarsinomethyl)ethane, L1, and 1,1,1 -tris(diphenylarsinomethyl)ethane, L2, toward nickel has been investigated. The ligand L1 forms high-spin, six-co-ordinate, and low-spin, five- or four-co-ordinate nickel(II) complexes; with L2 the two pseudo-tetrahedral nickel (I) complexes of the formula NiL2Br and NiL2I have been obtained.
S. Midollini and F. Cecconi, J. Chem. Soc., Dalton Trans., 1973, 681 DOI: 10.1039/DT9730000681
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