Differential reactivity of S-H bonds towards platinum(0). Direct synthesisof a low symmetry platinum(II) complex with hydrido, phosphine and N,S-cysteinato ethyl ester ligands

Authors
Real, J Polo, A Duran, J
Citation
J. Real et al., Differential reactivity of S-H bonds towards platinum(0). Direct synthesisof a low symmetry platinum(II) complex with hydrido, phosphine and N,S-cysteinato ethyl ester ligands, INORG CH C, 1(12), 1998, pp. 457-459
Citations number
13
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
INORGANIC CHEMISTRY COMMUNICATIONS
ISSN journal
13877003 → ACNP
Volume
1
Issue
12
Year of publication
1998
Pages
457 - 459
Database
ISI
SICI code
1387-7003(199812)1:12<457:DROSBT>2.0.ZU;2-5
Abstract
The chelate assisted oxidative addition of the H-S bond of L-cysteine ester s HSCH2C*H(COOR)NH2 (R = Me, Et), to Pt(PPh3)(4) yields the low symmetry cy steine complexes [Pt(H) (SCH2C*H(COOR)NH2) (PPh3)] in one step, with displa cement of three moles of triphenylphosphine, only when an excess of the cys teine ester is used. With HSCH2CH2NH2 the excess is not necessary: the 1:1 reaction yields [Pt(H) (SCH2CH2NH2) (PPh3)]. Bulkier HSCH2CH2NMe2 and HSCMe 2CH(COOMe)NH2 (penicillamine methylester) do not react, even when an excess of ligand is used. 2-Aminothiophenol gives trans-[Pt(H)(SC6H4-2-NH2)(PPh3) (2)] and does not form a chelate complex. (C) 1998 Elsevier Science S.A. Al l rights reserved.