A stable 6-metallated 1-azafulvene: synthesis and reactions of )(η2-S2CNMe2)(CO)(PPh3) and crystal structure of [)(2-pyrrolyl)}(η2-S2CNMe2)(CO)(PPh3)]+

Dimethyldithiocarbamate displaces chloride from both the carbene centre and the metal in Ru[CCl(2-pyrrolyl)]Cl2(CO)(PPh3)2 to give the stable ruthenium-substituted 1-azafulvene Ru(C[C 4 H 3 N]SCNMe 2 S )(η2-S2CNMe2)(CO)(PPh3) (A). Compound A can be protonated (reversibly) or methylated at the nitrogen of the 1-azafulvene to give compounds B and C respectively. The structure of B has been determined by a single crystal X-ray study.