Transition Metal-Promoted Oxidative Fusion with Carborane and Borane Anions. Synthesis of C4Bn (N = 8-11) Carborane Systems in the Presence of B5H8- or B3H8- Ions

摘要

Simultaneous treatment of CoCl2 or FeCl2 with the (2,3-(CH3)2C2B4H5)- and (B5H8- ions in THF at room temperature gave mixed-ligand metallacarborane complexes. In the iron-borane-carborane reaction the order of addition of reagents is important; thus, treatment of FeCl2 initially with (B5H8)- followed latter by ((CH3)2C2B4H5)- gave species identified mass spectroscopically as ((CH3)2C2B5H5)2FeH2 and (CH3)4C4B10H10' neither of which was observed in the previously described 'simultaneous' reaction.