Chromium(III) Complexes with Amino Acids. III. Chromium(III) Complexes with Acidic, Basic and Carbamoyl Amino Acids

Abstract

Abstract Syntheses by both the isothermal matrix in a solid state and by the usual solution method have been tried for chromium (III) complexes with l- and Dl-asparagine, l- and Dl-aspartic acid, l- and Dl-glutamine, l- and Dl-glutamic acid, l- and Dl-lysine, and l-ornithine. [Cr(l-aspNH2)3]·2H2O, [Cr(Dl-aspNH2)3]·3H2O, (NH4)2[Cr(l-asp)2][Cr(d-asp)2]·4H2O, and (+)[Cr(l-lys)2(NH3)(H2O)]Cl·4H2O were obtained by the matrix method in the solid state, while [Cr(l-aspNH2)3]·2H2O, [Cr(Dl-aspNH2)3]·2H2O, and (+)[Cr(l-lys)2(NH3)(H2O)]Cl·4H2O were prepared by the usual solution method. The preparation of chromium(III) complexes with other amino acids was not successful. A new type of complex of chromium(III) containing terdentate Dl-aspartic acid and a new mixed chromium(III) complex containing three different ligands (l-lysine, ammine, and aqua) were prepared.