Macropolyhedral borane reaction chemistry: Reductive oligomerisation of terBuNC by anti-B18H22 to give the boron-coordinated {(terBuNHCH){terBuNHC(CN)}CH2:} carbene residue

terBuNC and anti-B18H22 in refluxing CH2ClCH2Cl give the complex carbene residue {terBuNHCH{terBuNHC(CN)}CH2:} bound to an {anti-B18H20} moiety.