ansa-[(η5-(C5Me4)2Hf(NCO)]2-[μ-O
Molecule (S,S)-6 with two terminal NCO ligands and one bridging O2-
,
D.J. Knobloch, S.P. Semproni, E.Lobkovsky, P.J.Chirik J. Am. Chem. Soc. Vol 134, 2012,