Synthesis, Raman and NMR studies are presented for the new octahedral trimetallic complexes with composition [IrCl(SnCl3)(HgCl)(CO)(PR3)2], R = p-XC6H4; X = H, CH3O, F, Cl. Only the isomer containing the Cl3SnIrHgCl fragment and trans phosphine ligands is observed. Force constants for the IrSn and IrHg bonds as well as 31P, 119Sn and 199Hg NMR data are reported. The presence of a spin-spin coupling
Synthesis, Spectroscopy, and Structure of a Family of Iridabenzenes Generated by the Reaction of Vaska-Type Complexes with a Nucleophilic 3-Vinyl-1-cyclopropene
作者:Robert D. Gilbertson、Thomas L. S. Lau、Seren Lanza、He-Ping Wu、Timothy J. R. Weakley、Michael M. Haley
DOI:10.1021/om030394d
日期:2003.8.1
Seven new iridabenzenes were prepared by the addition of (Z)-1,2-diphenyl-3-(2-lithioethenyl)-1-cyclopropene to the Vaska-type complexes [IrCl(CO)(PR3)2], containing differing phosphine ligands. The iridabenzenes could be isolated from the reaction mixture either by direct means or after heating of the crude solution. In the case of the reactions using PMe3 and PEt3, a σ-vinyl/η2-cyclopropene Ir(I)