π-accepting-pincer rhodium complexes: An unusual coordination mode of PCP-type systems

Elizaveta Kossoy, Mark A. Iron, Boris Rybtchinski, Yehoshoa Ben-David, Linda J.W. Shimon, Leonid Konstantinovski, Jan M.L. Martin, David Milstein

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42 Citations (Scopus)

Abstract

The novel π-accepting, pincer-type ligand, dipyrrolylphoshinoxylene (DPyPX), is introduced. This ligand has the strongest π-accepting phosphines used so far in the PCP family of ligands and this results in some unusual coordination chemistry. The rhodium(I) complex, [(DPyPX)Rh(CO)(PR3)] (4, R=Ph, Et, pyrrolyl) is prepared by treating the relevant [(DPyPX)Rh(PR 3)] (3) complex with CO and is remarkably resistant to loss of either ligand. X-ray crystallographic analysis of complex 4b (R=Et) reveals an unusual cisoid coordination of the PCP phospbine ligands. These observations are supported by density functional theory (DFT) calculations.

Original languageEnglish
Pages (from-to)2319-2326
Number of pages8
JournalChemistry - A European Journal
Volume11
Issue number8
DOIs
Publication statusPublished - Apr 8 2005

Keywords

  • Coordination modes
  • P ligands
  • Pincer ligands
  • Rhodium
  • Tridentate ligands

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry

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    Kossoy, E., Iron, M. A., Rybtchinski, B., Ben-David, Y., Shimon, L. J. W., Konstantinovski, L., Martin, J. M. L., & Milstein, D. (2005). π-accepting-pincer rhodium complexes: An unusual coordination mode of PCP-type systems. Chemistry - A European Journal, 11(8), 2319-2326. https://doi.org/10.1002/chem.200401116