Sterically-induced low temperatur polyhedral rearrangements of carbaplatinaboranes: Synthesis and crystal structures of 1-Ph-3,3-(PMe2Ph)2-3,1,2-PtC2B9H10, 1-Ph-3,3-(PMe2Ph)2-3,1,11-PtC2B9H10, 11-Ph-3,3-(PMe2Ph)2-3,1,11-PtC2B9H10 and 1,11-Ph2-3,3-(PMe2Ph)2-3,1,11-PtC2B9H9

David R. Baghurst, Royston C. B. Copley, Holm Fleischer, D. Michael P. Mingos, Gwenda O. Kyd, Lesley J. Yellowlees, Alan J. Welch, Trevor R. Spalding, Donnacha O'Connell

Research output: Contribution to journalArticle

Abstract

Title full: Sterically-induced low temperatur polyhedral rearrangements of carbaplatinaboranes: Synthesis and crystal structures of 1-Ph-3,3-(PMe2Ph)2-3,1,2-PtC2B9 H10, 1-Ph-3,3-(PMe2Ph)2-3,1,11-PtC2B9 H10, 11-Ph-3,3-(PMe2Ph)2-3,1,11-PtC2B9 H10 and 1,11-Ph2-3,3-(PMe2Ph)2-3,1,11-PtC2 B9H9. Reaction of cis-Pt(PMe2Ph)2Cl2 with Tl2[7-Ph-7,8-nido-C2B9H10] affords 1-Ph-3,3-(PMe2Ph)2-3,1,2-PtC2B9 H10, mild thermolysis (55°C) of which yields 1-Ph-3,3-(PMe2Ph)2-3,1,11-PtC2B9 H10 and 11-Ph-3,3-(PMe2Ph)2-3,1,11-PtC2B9 H10. Both of the latter compounds are produced by the microwave irradiation of a mixture of cis-Pt(PMe2Ph)2Cl2 and [HNMe3][7-Ph-7,8-nido-C2B9H11 ]. When cis-Pt(PMe2Ph)2Cl2 is allowed to react with Tl2[7,8-Ph2-7,8-nido-C2B9H 9] at room temperature the only isolable species is 1,11-Ph2-3,3-(PMe2Ph)2-3,1,11-PtC2 B9H9. The generation of rearranged products with 3,1,11-PtC2B9 architectures is inconsistent with a diamond-square-diamond mechanism for the isomerisation of icosahedral heteroboranes.

Original languageEnglish
Pages (from-to)C14-C17
Number of pages4
JournalJournal of Organometallic Chemistry
Volume447
Issue number2
DOIs
Publication statusPublished - 6 Apr 1993

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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