Ternary chromium(III)-nucleotide-amino acid complexes III. L-Glutamic acid derivatives

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The first ternary chromium(III)-nucleotide- glutamic acid complexes with purine (5′ATP, 5′AMP, 5′GMP, 5′IMP) and pyrimidine (5′CMP) nucleotides are reported. The compounds were prepared by reaction of Cr 2( L-Glu) 3(OH) 2Cl·4H 2O or Na 3Cr( L- Glu) 3·4H 2O with the nucleotide in water medium. One or two glutamic acid molecules of the starting Cr(III)-amino acid complex are removed during reaction. These facts are similar to those previously reported in the cases of histidine and cysteine ternary complexes. The complexes have been characterized by elemental analyses, conductivity measurements, infrared and electronic spectra and EPR.