Trends in the Reactivity of the CpMn(CO)2(η2-arene) Bond [arene = benzene, toluene, o-xylene, m-xylene, p-xylene, and mesitylene]: An Experimental and Theoretical Investigation Academic Article uri icon


  • The displacement of η 2-coordinated arenes [arenes = benzene, toluene, o-xylene, m-xylene, p-xylene, and mesitylene] from the photolytically generated C pMn(CO) 2(η 2-arene) complex by pyridine was studied. The substitution reaction proceeds by a dissociative mechanism, and the relative rates of displacement provide information about the interplay between electronic and steric factors in determining the overall stability of the Mn-(η 2-arene) bond. The regioselectivity of metal binding to the arene ligand was determined by examining the observed trends in the relative displacement rates for the xylenes. Theoretical modeling of the Mn-(η 2-arene) complexes lends support for the experimental analysis. Interestingly, unlike the other arenes, DFT (density functional theory) calculations suggest that mesitylene is bound to the Mn center by an arene C-H bond rather than by a C=C edge of the aromatic system. © 2009 American Chemical Society.

published proceedings

  • Organometallics

author list (cited authors)

  • Bengali, A. A., Fan, W. Y., & Abdulrazak, K. T

citation count

  • 4

complete list of authors

  • Bengali, Ashfaq A||Fan, Wai Yip||Abdulrazak, Khaldoon T

publication date

  • June 2009