Group 4 metallocene catalysed full dehydrogenation of hydrazine borane

A study of the full dehydrogenation of hydrazine borane (H2N-NH2-BH3) to give H-2 and N-2 as gaseous products catalysed by a variety of group 4 metallocene alkyne complexes of the type Cp'M-2(L)(eta(2)-Me3SiC2SiMe3) (Cp' = substituted or unsubstituted eta(5-)cyclopentadienyl; M = Ti, no L; M = Zr, L = pyridine) and group 4 metallocene hydrides is presented. Volumetric data show that the amount of hydrogen released is strongly dependent on both, the metal and the cyclopentadienyl ligand.