Synthesis of N-Heterocyclic Carbene-Sulfonate Palladium Complexes

Syntheses of new NHC-sulfonate palladium complexes [ N -(2,6-diisopropylphenyl)- N′ -sulfomethylNHC]Pd(2,6-lutidine) ( 7a ) and [ N -(2,6-diisopropylphenyl)- N′ -sulfomethylNHC]Pd(PPh 3 ) ( 7b ) are reported. The structure of complexes 7a and 7b were determined by single-crystal X-ray analysis as the first examples of bidentate coordination of imidazolium-sulfonate to a metal center.