The preparation is described of some complexes of benzene-1,2-diamine with cobalt(II), nickel(II), and copper(II). The complexes fall into three types: MLX2[L = benzene-1,2-diamine; M = Co(II), Ni(II), or Cu(II); X = Cl– or Br–]; ML2X2(X = Cl–, Br–, NO3–, ClO4–, or ½SO42–), in which the anion is co-ordinated; and ML3X2(X = Cl–, Br–, NO3–, or ClO4–). It has been shown that benzene-1,2-diamine can act as a chelating or as a bridging ligand.

Benzene-1,2-diamine can act as a chelating or bridging ligand in complexes with cobalt(II), nickel(II), and copper(II), forming three types of complexes.

Paper

Complexes of the benzenediamines. Part I. Some complexes of cobalt(II), nickel(II), and copper(II) with benzene-1,2-diamine

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