Synthesis and properties of some bis(ligand)dihydroboron(n+) salts

Article abstract of DOI:10.1021/ic50079a036

Salts containing bis(ligand)dihydroboron(1+) ions of the type LL′BH₂⁺, where L and L′ are electron-donating ligands coordinated to boron through different group V or VI elements, including nitrogen, phosphorus, arsenic, and sulfur, have been prepared by displacement of halide ion from a (trialkyl donor)-haloborane adduct by the appropriate neutral ligand. Halide and hexafluorophosphate salts of the compounds have been characterized. The method is quite general for the preparation of a wide variety of boronium ions, as further illustrated by the synthesis of chelated boron(1+) ions and a dinuclear boron(2+) ion from the reaction of N,N,N′,N′-tetramethylethylenediamine with mono- and dihaloborane adducts of trimethylamine.