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Synthesis and Investigation of Geometrical Isomerism of Trinitro(aminoacidato)amminecobaltate(III) Complex Salts
Author(s) -
Čelap Milenko B.,
Malinar Mijat J.,
Janjić Tomislav J.
Publication year - 1971
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19713830316
Subject(s) - chemistry , cobalt , norvaline , amino acid , hydrogen peroxide , salt (chemistry) , glycine , medicinal chemistry , alanine , stereochemistry , organic chemistry , valine , biochemistry
Synthesis of a new class of coordination compounds of cobalt(III) with amino acids (glycine, alanine, α‐amino‐butyric acid and norvaline), i.e., trinitro(aminoacidato)‐amminecobaltate(III) salts, M[CoNH 3 Am(NO 2 ) 3 ], is described. The synthesis consists in the action of amino acid alkali salts on the Erdmann salt or peripheral isomer of trinitrotriamminecobalt(III). The same compounds were also obtained by direct synthesis, i.e., by hydrogen peroxide oxidation of cobalt(II) to cobalt(III) in the presence of the corresponding ligands. The peripheral configuration of the complexes obtained was determined by chemical and physical methods (electronic and PMR spectroscopy). The compounds are intermediates formed in obtaining of dinitrobis(aminoacidato)cobaltate(III) salts by the reaction of amino acids with the Erdmann salt or peripheral isomer of trinitrotriamminecobalt(III).