Tert-butylborane: A bis (σ-B–H) ligand in ruthenium hydride chemistry

The reaction of tert-butylborane with the bis(dihydrogen) complex RuH2(η2-H2)2(PCy3)2 leads to the corresponding bis σ-borane complex which is the first example of a monoalkylborane ruthenium bis σ-complex. An alternative route involves the reaction of RuHCl(η2-H2)(PCy3)2 with lithium tert-butylborohydride.