Isolation and characterization of cobalt (III) tris-D-aminosugars

Abstract

Mixed complexes of animosugars and 1,10-phenanthroline (phen) with cobalt(III), with the composition Co(III)(phen)(2)sugar, disproportionate in aqueous solution in approximately one month, giving non ionic tris-aminosugar complexes. The complexes with alpha-D-glucosamine, alpha-D-galactosamine and beta-D-mannosamine have the Lambda-configuration at Co(III) with facial isomerism, on the bases of molecular composition and absorption and circular dichroism spectra.