A Monomeric lmidazol-2-ylidene-Silver(l) Chloride Complex:Synthesis,Structure,and Solid State ~(109)Ag and ~(13)C CP/MAS NMR Characterization

摘要

The structure of 1,3-bis(2,4,6-trimethylphenyl)-imidazol-2-ylidene-silver(l) chloride,1,has been determined to be a monomer with weak head-to-tail H...CI interactions in the solid state.A multi-nuclear NMR study using a ~(13)C-(carbene) labeled derivative,1(~(13)C),exhibits ~(l3)C-~(107,109)Ag coupling in solution.Further,the solid state CP/MAS NMR parameters,including the principal components of the chemical shift tensors for both the ~(13)C and ~(l09)Ag centers,have been determined.With the aid of DFT calculations,the orientation of the chemical shift tensors have been assigned.