Synthesis and structure of chiral rhenium allyl complexes of the formula (.eta.5-C5H5)Re(NO)(PPh3)(CH2C(R') = CHR) Academic Article uri icon

abstract

  • Reaction of Li+[(ή5-C5H5)Re(NO)(PPh3)]_with allyl, methallyl, and cinnamyl chlorides gives η1-allyl complexes (ή5-C5H5)Re(NO)(PPh3)(CH2C(R')=CHR) (2a-c) in 72-93% yields. Complexes 2 are also prepared (70-84%) by reaction of t-BuO-K+with alkene complexes [(ή5-C5H5)Re(NO)(PPh3)(H2C=CH-(R')CH2R)]+PF6-and are characterized by NMR, IR, and mass spectroscopy. The crystal structure of 2c (monoclinic, P21/n, a = 13.509 (3) Å, b = 14.871 (2) Å, c = 14.698 (3) Å, β = 112.54 (1)°, Z = 4) shows two conformations of the cinnamyl ligand which differ primarily in orientation about the Cα-Cβbond. Difference1H NOE experiments on 2c and 2a suggest the presence of analogous conformations in solution. © 1989, American Chemical Society. All rights reserved.

author list (cited authors)

  • Bodner, G. S., Emerson, K., Larsen, R. D., & Gladysz, J. A.

citation count

  • 9

publication date

  • October 1989