Synthesis, characterization, reactivity and molecular structure of arene-osmium complexes: A new synthetic entry into (η6-arene)osmium(II) chemistry

Hadley S. Clayton, Banothile C.E. Makhubela, Hong Su, Gregory S. Smith, John R. Moss

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

A new convenient one-pot procedure for the preparation of the p-cymene-osmium dimer [(η6-p-MeC6H4Pri)OsBr2]2 (1) from potassium osmate K2[OsO2(OH)4] is described. The analogous hexamethylbenzene complex [(η6-C6Me6)OsBr2]2 (2) and a series of new arene-osmium complexes [(η6-p-MeC6H4Pri)OsLBr2] (3-9) (L = CO, PPh3, PEt3, PMePh2, P(OMe)3, P(OBun)3 and P(OPh)3) have been prepared from 1. The complex [(η6-C6Me6)Os(CO)Br2] (10) was obtained from 2. All the complexes were characterized spectroscopically by NMR and IR and by elemental analysis. Single crystal X-ray structures of [(η6-p-MeC6H4Pri)OsBr2]2 (1) and [(η6-p-MeC6H4Pri)Os(PPh3)Br2] (3) are reported. The reactions of some of these complexes with BrMg(CH2)3CH{double bond, long}CH2 and MeLi are also described.

Original languageEnglish
Pages (from-to)1511-1517
Number of pages7
JournalPolyhedron
Volume28
Issue number8
DOIs
Publication statusPublished - 10 Jun 2009
Externally publishedYes

Keywords

  • Arene-osmium
  • p-Cymene
  • Phosphite
  • Potassium osmate
  • Tertiary phosphine

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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