Reaction of platinum(II) derivatives with 1-hydroxyalkyl-3,5- dimethylpyrazole ligands. Cleavage of the N(pz)-C(sp<sup>3</sup>) bond. X-ray crystal structure of cis-[PtCl<inf>2</inf>(HL<sup>2</sup>)<inf>2</inf>] (HL <sup>2</sup>=1-(2-hydroxyethyl)-3,5-dimethylpyrazole) and trans-[PtCl <inf>2</inf>(dmpz)<inf>2</inf>] (dmpz=3,5-dimethylpyrazole)

Anna Boixassa, Josefina Pons, Xavier Solans, Mercè Font-Bardia, Josep Ros

Research output: Contribution to journalArticleResearchpeer-review

43 Citations (Scopus)

Abstract

The reactions of 1-hydroxymethyl-3,5-dimethylpyrazole (HL1) and 1-(2-hydroxyethyl)-3,5-dimethylpyrazole (HL2) with several platinum starting materials ([PtCl2(CH3CN)2], cis- and trans-[PtCl2(PhCN)2], PtCl2 and K 2PtCl4) under different conditions have been examined and compared with those obtained from the reactions with Pd(II). cis and trans Pt(II) adducts are obtained in a different ratio depending on the metallic starting complex. The reaction of HL1 with any of the Pt(II) complexes differs from that with Pd(II) and also from the equivalent reaction of HL2 with Pt(II). This reaction implies the rupture of the ligand: the cleavage of the N(pz)-C(sp3) bond leads to [PtCl 2(dmpz)2] (dmpz=3,5-dimethylpyrazole). For comparison, the direct reaction of dmpz with Pt(II) has also been studied. The crystal structure of cis-[PtCl2(HL2)2] and trans-[PtCl2(dmpz)2] are here reported. © 2003 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)254-263
JournalInorganica Chimica Acta
Volume355
DOIs
Publication statusPublished - 20 Nov 2003

Keywords

  • Alcohol ligand complexes
  • Platinum complexes
  • Pyrazole complexes

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