Abnormal binding in a carbene complex formed from an imidazolium salt and a metal hydride complex

Abstract
2-Pyridylmethylimidazolium salts and IrH5(PPh3)2 give an [(N–C)IrH2(PPh3)2]+ species with the imidazole ring bound in the ‘wrong way’: at C-5, not at the expected C-2.