Rhodium vinylidene and alkyne complexes containing a pendant uracil group

Michael J. Cowley, Jason M. Lynam*, Adrian C. Whitwood

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Reaction of HC{triple bond, long}CUr (Ur = uracil) with [RhCl(PiPr3)2] results in the formation of the vinylidene complex [RhCl(PiPr3)2({double bond, long}C{double bond, long}C{H}Ur)]. In the solid state this complex forms a hydrogen bonded network which consists of complementary interactions between uracil groups on neighbouring rhodium complexes and with the methanol of crystallisation. The η2-alkyne complexes [RhCl(PiPr3)22-PhC{triple bond, long}CUr)] and [Rh(η5-C5H5)(PiPr3)(η2-PhC{triple bond, long}CUr)] have also been prepared. In contrast to the behaviour of [Rh(η5-C5H5)(PiPr3)(η2-PhC{triple bond, long}CUr)], [RhCl(PiPr3)22-PhC{triple bond, long}CUr)] shows little evidence for the formation of hydrogen bonded aggregates in solution. The difference in behaviour between the two species is rationalised on the basis of steric effects.

Original languageEnglish
Pages (from-to)18-25
Number of pages8
JournalJournal of organometallic chemistry
Volume695
Issue number1
DOIs
Publication statusPublished - 1 Jan 2010

Keywords

  • Alkyne ligands
  • Rhodium
  • Self-assembly
  • Uracil
  • Vinylidene ligands

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