Reactivity of sodium borohydride with olefins in the presence of NiLnC
l2 (where L = 2,2 bipyridyl, pyridine, triphenyl phosphine) has been s
tudied. Hydrogenation as well as hydroboration on olefins is observed.
Nitrogen donor ligands favour hydroboration on olefins when a nickel
borohydride system is used.