Y. Yoshikawa, K. Yamasaki
Apr 1, 1967
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Journal
Bulletin of the Chemical Society of Japan
Abstract
The 1 : 1 and 1 : 2 complexes of copper and nickel with meso and racemic 2,3-diaminosuccinic acids were prepared, and their structures were studied by determining their magnetic moments and absorption and reflectance spectra. The 1 : 2 complexes have the following chemical compositions: Na2[Cu(m-das)2]·8H2O, Na2[Cu(r-das)2]·7\frac12H2O, Na2[Ni(m-das)2]· 4\frac12H2O and Na2[Ni(r-das)2]·7H2O, where “das” indicates a diaminosuccinate ion. In these complexes the ligand seems to be coordinated with the amino groups. The 1 : 1 complexes of both copper and nickel are coordination polymers. The reflectance spectra suggest that Cu-(m-das) might have a trans(N) and Cu(r-das), a cis(N) configuration.