Sr. Saha et al., SYNTHESIS AND CHARACTERIZATION OF COPPER(II) AND NICKEL(II) COMPLEXESOF N-1(2-CARBOXYETHYL)BIGUANIDE, Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical, 35(9), 1996, pp. 784-786
The ligand N-1(2-carboxyethyl)biguanide (H(2)L) derived from dicyandia
mide and beta-alanine forms 1:1 and 1:2 complexes with Cu(II) and only
1:2 complex with Ni(II). The complexes have been characterised on the
basis of analytical, spectral and magnetic data. The 1:1 and 1:2 stoi
chiometric complexes have been assigned respectively the square planar
and octahedral geometry.