1,2,4-Triazinylcarboranes: a new approach to the synthesis and the crystal structures of 1-(3,6-ditolyl-1,2,4-triazin-5-yl)-2-phenyl-1,2-dicarba-closo-dodecaborane and 1,7-bis[6-phenyl-3-(4-chlorophenyl)-1,2,4-triazin-5-yl]-1,7-dicarba-closo-dodecaborane

The S_N^Hreactions of the lithio derivatives of 1,2- or 1,7-dicarba-closo-dodecaboranes with 1,2,4-triazine 4-oxides represent a versatile synthetic approach to carboranes bearing heteroaromatic substituents.