Hydrogen bonding transition metal

Houlton, X., Mingos, D. M. P. and Williams, D. J. (1994). Multi-dimensional crystal engineering of metal complexes based on complementary hydrogen bonding. Transition Met. Chem. 19, 653. 

Hydrogenation of molecules with heteroatoms is also a desirable reaction for example, in C=0 (aldehydes or ketones) -NO2, C=N and other bonds. For these hydrogenations, too, transition metals are the most active catalysts and, again, the reaction runs very easily up to the full saturation by hydrogen from nitro (or nitrile) to amino, and with some metals the undesired hydrogenolytic reactions can also accompany the hydrogenation in the required direction. 

Formation of Bonds between Hydrogen and Transition Metals... 

Formation of Bonds between Hydrogen and Transition Metals 1.10.4. by Oxidative Addition of Hydrogen... 

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