Reactions of the di-µ-oxo-bis[(L-cysteinato)oxomolybdate(V)] ion
- 1 January 1973
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 13,p. 1388-1394
- https://doi.org/10.1039/dt9730001388
Abstract
Reactions of the complex Na2,[Mo2(O)4(cyst)2],5H2O (cyst =L-cysteinato)(I) have been studied. In aqueous solution (pH < 6) the co-ordinated carboxylate groups of the complex are protonated and replaced by water. Complex (I) reacts with phosphate and tartrate, but not with borate, carbonate, acetate, and phthalate ions. With diazomethane the co-ordinated thiolate group of (I) is methylated and the complex decomposes. Co-ordination of ammo-acids to molybdenum(V) is facilitated by thiol groups. The following complexes have been isolated: [Mo2,(O)3(Etcyst)4](Encyst = ethyl L-cysteinato)(II); [Mo2(O)3(qumolin-8-olate)4,H2O](III); [Mo2(O)4SO4(phen)2,3H2O](IV); [Mo2(O)4Cl2(phen)2](V); [Mo2(O)4(MoO4)(phen)2],2H2O (VI); and [Mo3(O)4(Etcyst)4(phen)2](phen = 1,10-phenanthroline)(VII), I.r., u.v., and visible spectra, and magnetic moments of the complexes are reported and structures proposed.Keywords
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