NMR-STUDY OF MONONUCLEAR, BINUCLEAR AND TRINUCLEAR TRIS(HYDROXYMETHYL)PHOSPHINE-PLATINUM(II) COMPLEXES WITH AQUO OR HYDROXO LIGANDS

E COSTA, M MURRAY, P G PRINGLE, M B SMITH

Research output: Contribution to journalArticle (Academic Journal)

Abstract

Treatment of [PtX(2){P(CH2OH)(3)}(2)] (X=Cl or Br) with AgY (Y=NO3, BF4, PF6 or ClO4,) in water gives three species A, B and C. Addition of HY to this mixture gives A exclusively which is identified as the bis(aquo) cation [Pt(OH2)(2){P(CH2OH)(3)}(2)](2+). The aquo ligands can be substituted by pyridine, 2,2'-bipyridine or 9,10-phenanthroline to give the corresponding [PtL(2){P(CH2OH)(3)}(2)](2+). Treatment of [Pt(OH2)(2){P(CH2OH)(3)}(2)](2+) with NEt(3), gives B which is identified as the binuclear species [Pt-2(mu-OH)(2){P(CH2OH)(3)}(4)](2+). After 24 h in acid solution in the presence of Ag+, the third species C is the main product which is trinuclear (as evidenced by P-31 and Pt-195 NMR spectroscopy) and is assigned the structure [Pt-3(mu-OH)(3){P(CH2OH)(3)}(6)](3+). The products are very soluble in water and have been characterised only by P-31 and Pt-195 NMR spectroscopy. The chemistry of these P(CH2OH)(3) complexes is compared with the chemistry of the analogous PMe(3), complexes.

Original languageEnglish
Pages (from-to)25-28
Number of pages4
JournalInorganica Chimica Acta
Volume213
Issue number1-2
Publication statusPublished - Nov 1993

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