Boranylium ions

BH2NH3+ molecule, an example of a borenium cation, a type of boranylium ion with three ligands.

In chemistry, a boranylium ion is an inorganic cation with the chemical formula BR+
2, where R represents a non-specific substituent. Being electron-deficient, boranylium ions form adducts with Lewis bases. Boranylium ions have historical names that depend on the number of coordinated ligands:[1]

  • [BR
    2    ]+
    : borinium
  • [BR
    2    L]+
    : borenium
  • [BR
    2    L
    2    ]+
    : boronium
  1. ^ Koelle, P.; Noeth, H. (1985-10-01). "The chemistry of borinium and borenium ions". Chemical Reviews. 85 (5): 399–418. doi:10.1021/cr00069a004. ISSN 0009-2665.