Linkage isomers of molybdenum(0) and the chelate ligand pyridine-2-carboxaldehyde-2′-pyridylhydrazone (paphy)

Linkage isomers of a novel type have been prepared with molecular formula Mo(CO)4 paphy, one by the reaction of pyridine-2-carboxaldehyde-2′-pyridyl-hydrazone (paphy) with the chloropentacarbonylmolybdate(0) anion and the other by direct reaction of paphy with molybdenum hexacarbonyl.