S. Grundemann et al., Abnormal binding in a carbene complex formed from an imidazolium salt and a metal hydride complex, CHEM COMMUN, (21), 2001, pp. 2274-2275
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.