Crystal and solution structure of oxo rhenium(V) complexes with cysteine and cysteine methyl ester

The monooxo rhenium(V) complexes of cysteine (complex 1) and cysteine methyl ester (complex 2) were synthesised via a ligand exchange reaction starting from gluconatooxorhenium(V). Unexpectedly, the obtained oxorhenium(V) complex with cysteine methyl ester (2) was partially saponified. Both complexe...

Full description

Saved in:
Bibliographic Details
Published in:Journal of biological inorganic chemistry 1999-02, Vol.4 (1), p.48-55
Main Authors: Kirsch, S, Jankowsky, R, Leibnitz, P, Spies, H, Johannsen, B
Format: Article
Language:English
Subjects:
Crystallization
Cysteine - analogs & derivatives
Cysteine - chemistry
Cysteine - metabolism
Electrophoresis, Capillary
Hydrogen-Ion Concentration
Models, Molecular
Rhenium - chemistry
Rhenium - metabolism
Solutions
Spectrum Analysis - methods
X-Ray Diffraction
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The monooxo rhenium(V) complexes of cysteine (complex 1) and cysteine methyl ester (complex 2) were synthesised via a ligand exchange reaction starting from gluconatooxorhenium(V). Unexpectedly, the obtained oxorhenium(V) complex with cysteine methyl ester (2) was partially saponified. Both complexes were characterised by common analytical techniques in their solid state. Thus, an octahedral complex structure with 2(NH2,S) co-ordination in the equatorial plane and one carboxyl group bound trans to the oxo group is proven for complex 2 by X-ray diffraction. Furthermore, the existence of a dioxo species at higher pH was proven for the first time with this type of ligand by determining the nearest co-ordination sphere of the rhenium centre in solution at a pH of 12 using extended X-ray absorption fine structure spectroscopy.
ISSN:0949-8257
1432-1327
DOI:10.1007/s007750050288