The geometrical isomers of oxalato and malonato-(ethylenediamine-N,N’-di-S,S-2-propionato)-chromate(III) complexes

Abstract

Three octahedral chromium(III) complexes of the general formula Na[Cr(S,S-eddp)L].2H2O, where eddp = the tetradentate O-N-N-O-type ligand ethylenediamine-N,N?-di-S,S-2-propionate and L = a bidentate O-O-type ligand, either oxalate or malonate, were prepared. The complexes were synthesized by the reaction of chromium(III) chloride, S,S-eddp and malonic acid or sodium oxalate, at 60?C. The complexes were isolated chromatographically and the geometric configuration of the complexes was proposed on the basis of their infrared and electronic absorption spectra.

Syntheses, Characterization, Resolution, and Biological Studies of Coordination Compounds of Aspartic Acid and Glycine

“…Complexes of L 1 and L 2 , namely, Na[Co(L 1 ) 3 ], Na[Cu(L 1 ) 3 ], Na[Ni(L 1 ) 3 ], [Cu(L 2 )] 2 , and Na[Co(L 2 ) 3 ], were separated into their geometric isomers using an adaptation of the method described by Glodjović et al (2005) [ 48 ].…”

Stereospecific ligands and their complexes. VI. The crystal structure of (S,S)-ethylenediamine-N,N'-di-2-propanoic acid hydrochloride, (S,S)-H2eddp•HCl

“…6 According to these investigations, attention was mainly focused on the preparation, characterization and biological activity of metal complexes with stereospecific edda-type ligands (edda = ethylenediamine-N,N'-diacetato ion), such as the ethylenediamine-N,N'-di-(S,S)-2-propanoate ion and its derivatives. [7][8][9][10] 996 GLODJOVIĆ et al…”