Complexes of molydenum-(V) and -(VI) with L-cysteine and related compounds and their reactions with hydrogen sulphide
- 1 January 1970
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 2421-2428
- https://doi.org/10.1039/j19700002421
Abstract
We have prepared the following complexes: for L =α-alanine and β-alanine, MoVI 2O4(OH)3L; for L = 2-mercapto-ethylamine, [MoVIO2L2], [Mo5O9S3L6], [Mo4O3L5],2H2O, [Mo3OS5L4],2H2O; for L = L-cysteine methyl ester,[MoVIO2L2]. [Mo2 VO3L4], [Mo2 VO2S2L2]; for L = 2-mercaptoethanol, [Mo2 vO3L4], [Mo2 VO4L2]; and for L =L-cysteine, Na2[MoVIO2L2], dimethylformamide, Na2[MoV 2O4L2],5H2O, Na2[Mo2 VO2S2L2],3H2O. The oxocomplexes were prepared from aqueous solutions of molybdenum-(VI) and -(V) and the ligands. With hydrogen sulphide some of the complexes gave complexes in which bridging oxide ligands had been replaced by sulphide. The complexes are diamagnetic. We report their i.r. and electronic spectra and discuss their structures, the effect on their spectra and other properties of different donor atoms (N,O,S), and their relevance as models for molybdenum-containing enzymes.Keywords
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