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Synthesis and Configuration of New Isomers of the Bis(aminocarboxylato )carbonatocobaltate(III) Ion

Mijat J. Malinar ; Institute of Chemistry Faculty of Sciences University of Beograd, P. 0. Box 550, 11001 Beograd, Yugoslavia
Petar N. Radivojša ; Institute of Chemistry Faculty of Sciences University of Beograd, P. 0. Box 550, 11001 Beograd, Yugoslavia
Katarina Marković ; Institute of Chemistry Faculty of Sciences University of Beograd, P. 0. Box 550, 11001 Beograd, Yugoslavia
Dobrila Belić ; Institute of Chemistry Faculty of Sciences University of Beograd, P. 0. Box 550, 11001 Beograd, Yugoslavia
Milenko B. Ćelap ; Institute of Chemistry Faculty of Sciences University of Beograd, P. 0. Box 550, 11001 Beograd, Yugoslavia

Sažetak

In the reaction between potassium tricarbonatocobaltate(III)
and the corresponding amino acid (glycine or ~-alanine) two new
geometrical isomers of the bis(aminocarboxylato)carbonatocobaltate(
III) ion have been obtained. In case of glycine, in addition to
the previously described1- 3 cis(N), cis(O)-isomer, the corresponding
cis(N), trans(O)-isomer was also obtained, whereas in the reaction
with ~-alanine the trans(N), cis(O)-isomer was prepared. The configuration
of the trans(N)-isomer was established using its electronic
spectrum, whereas the configuration of the other two
isomers was determined by means of PMR spectroscopy. In addition,
the cis, cis-isomer was resolved into enantiomers by means
of A - ( + )ss9-cis(N02), trans(N)-isomer of the bis(S-arginine)dinitrocobalt(
III) ion. The absolute configuration of the tJ. - (-)589-
-cis(N), cis(O)-isomer was assumed by comparing its CD spectrum
with that of the A - ( + )58rcis(N), cis(O)-isomer of the carbonatobis-(
S-valinato)cobaltate(III) ion.

Ključne riječi

Hrčak ID:

194114

URI

https://hrcak.srce.hr/194114

Datum izdavanja:

20.10.1984.

Posjeta: 723 *