Characterization of Cobalt(III) Complexes with <scp>l</scp>-Penicillaminate. Crystal Structure of (Diethylenetriamine)(<scp>l</scp>-penicillaminato)cobalt(III) Chloride Monohydrate

Abstract

Abstract The crystal structure of the title complex, which was chromatographically obtained as the first eluted isomer, has been determined by the X-ray diffraction method. The dark-brown needle crystal was hexagonal, space group P61, a=21.035(5), c=6.459(3) Å, Z=6, and the final R value was 0.076 for 1504 non-zero reflections. Of three possible isomers for the (diethylenetriamine)(l-penicillaminato)cobalt(III) complex, the complex isolated has trans(N1N) configuration. The average Co–N distance for the nitrogen atoms bonded cis to the sulfur atom is 1.961 Å, whereas the trans Co–N length is 2.007 Å.