Addition of Pt(IPr) Groupings to Ru5 Carbide Gives New Mixed-Metal Pt–Ru Cluster Complexes

Anjaneyulu Koppaka, Vincent Zollo, Sedigheh Etezadi, David C. Lever, Burjor Captain

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


The reaction of Pt(IPr)(SnBu3 t)(H), 1 [IPr = N-heterocylic carbene ligand N,N ′-bis-(2,6-(diisopropyl) phenyl)imidazol-2-ylidene] with Ru55-C)(CO)15, 2, in 1.2:1 (and 2.2:1) ratio in benzene solvent at refluxing temperature afforded the octahedral monoplatinum–pentaruthenium cluster complexes PtRu5(IPr)(CO)156-C), 3 in 54 % (10 %) yield, PtRu5(IPr)(CO)14(H)26-C), 4 in 6 % (10 %) yield and the diplatinum–pentaruthenium cluster complex Pt2Ru5(IPr)2(CO)156-C), 5 in 2 % (36 %)yield. Complex 3 readily reacts with H2 at room temperature to give complex 4. Compound 5 exhibits dynamical activity in solution where the two Pt(IPr) groups are exchanging rapidly. All three compounds were structurally characterized by single-crystal X-ray diffraction analyses.

Original languageEnglish (US)
Pages (from-to)1671-1681
Number of pages11
JournalJournal of Cluster Science
Issue number5
StatePublished - Sep 1 2016


  • Bimetallic
  • Cluster
  • Interconversion
  • N-heterocylic carbene
  • Platinum

ASJC Scopus subject areas

  • Biochemistry
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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