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

Julio Real, Alfonso Polo, Josep Duran

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6 Citations (Scopus)

Abstract

The chelate assisted oxidative addition of the H-S bond of L-cysteine esters HSCH2C*H(COOR)NH2 (R = Me, Et), to Pt(PPh3)4 yields the low symmetry cysteine complexes [Pt(H) (SCH2C*H(COOR)NH2) (PPh3)] in one step, with displacement of three moles of triphenylphosphine, only when an excess of the cysteine ester is used. With HSCH2CH2NH2 the excess is not necessary: the 1:1 reaction yields [Pt(H) (SCH2CH2NH2) (PPh3)]. Bulkier HSCH2CH2NMe2 and HSCMe2CH(COOMe)NH2 (penicillamine methyl ester) 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. © 1998 Elsevier Science S.A. All rights reserved.
Original languageEnglish
Pages (from-to)457-459
JournalInorganic Chemistry Communications
Volume1
Issue number12
DOIs
Publication statusPublished - 1 Jan 1998

Keywords

  • Cysteine complexes
  • Hydrido complexes
  • Platinum complexes

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