Structure of copper(I) and silver(I) complexes with zwitterionic ligands derived from N-Heterocyclic Carbenes

N-Heterocyclic Carbene (NHC) ligands have been instrumental in the synthesis of novel metal and main group-containing compounds, as well as their subsequent reactivity. Here, the coordination chemistry of CS2 and PhNCS derivatives of the sterically encumbering 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr) are studied. The reaction of IPr center dot CS2 with Cu(I) and Ag(I) salts results in the isolation of dinuclear complexes, [(IPr center dot CS2)(2)M-2(THF)(n)][X](2), M = Cu, X = PF6, n = 4; M = Ag, X = OTf, n = 2. The 1:1 stoichiometric reaction of IPr center dot PhNCS with CuI results in to the formation of ([IPr center dot PhNCS)(2)Cul[CuI2]. All complexes were characterized by H-1, C-13, and IR spectroscopy and their solid-state structures determined by X-ray crystallography.

Automated summary

N-Heterocyclic Carbene (NHC) ligands play a crucial role in synthesizing novel metal and main group-containing compounds. This study focuses on the coordination chemistry of CS2 and PhNCS derivatives of the sterically encumbering 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr).