Jump to main content
Jump to site search


H2 Addition to (Me4PCP)Ir(CO): Studies of the Isomerization Mechanism

Abstract

Reduced steric demand of the Me4PCP pincer ligand [PCP = C6H3-2,6-(CH2PR2)2 R=Me], allows for a more open metal center. This is evident through structure and reactvity comparisons between (Me4PCP)Ir derivatives and other (R4PCP)Ir complexes (R = tBu, iPr, CF3). In particular, isomerization from cis-(R4PCP)Ir(H)2(CO) to trans-(R4PCP)Ir(H)2(CO) is more facile when R = Me than when R = iPr. Deuterium incorporation in the hydride ligands from solvent C6D6 was observed during this isomerization when R = Me. This deuterium exchange has not been observed for other analogous R4PCP iridium complexes. A kinetic study of the cis/trans isomerization combined with computational studies suggest that the cis/trans isomerization proceeds through a CO-inserstion pathway involving a formyl intermediate

Back to tab navigation

Supplementary files

Publication details

The article was received on 13 Jul 2018, accepted on 05 Oct 2018 and first published on 11 Oct 2018


Article type: Paper
DOI: 10.1039/C8DT02861C
Citation: Dalton Trans., 2018, Accepted Manuscript
  •   Request permissions

    H2 Addition to (Me4PCP)Ir(CO): Studies of the Isomerization Mechanism

    T. T. Lekich, J. B. Gary, S. M. Bellows, T. R. Cundari, L. M. Guard and D. M. Heinekey, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C8DT02861C

Search articles by author

Spotlight

Advertisements