<i>N</i>-Heterocyclic Carbenes: Synthesis, Structures, and Electronic Ligand Properties<sup>,</sup>
作者:Wolfgang A. Herrmann、Jan Schütz、Guido D. Frey、Eberhardt Herdtweck
DOI:10.1021/om0600801
日期:2006.5.1
N-Heterocyclic carbene (NHC) rhodium(l) complexes of general formula Rh(COD)X(NHC) are synthesized and structurally characterized (spectroscopy, X-ray diffraction). The relative sigma-donor/pi-acceptor quality of various NHC ligands was examined and classified by means of IR spectroscopy at the corresponding Rh(CO)(2)I(NHC) complexes. The first single-crystal X-ray diffraction studies of rhodium pyrazolin- and tetrazolinylidene complexes are reported. A wide variety of different azolium salts was applied to obtain rhodium and iridium complexes with two and four carbene ligands.
C–H Activation of imidazolium salts by Pt(0) at ambient temperature: synthesis of hydrido platinum bis(carbene) compounds
作者:Marcel A. Duin、Nicolas D. Clement、Kingsley J. Cavell、Cornelis J. Elsevier
DOI:10.1039/b211235c
日期:2003.1.23
A zerovalentplatinum(carbene) complex with two monoalkene ligands, which is able to activate C-H bonds of imidazolium salts at room temperature to yield isolable hydrido platinum(II) bis(carbene) compounds, has been synthesised for the first time.