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Reference.org
Boranylium ions
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<p>In <a href="/facts/Chemistry/SrNqkGVm">chemistry</a>, a boranylium ion is an <a href="/facts/Inorganic_compound/TfFfzxSz">inorganic</a> cation with the <a href="/facts/Chemical_formula/hghUtthl">chemical formula</a> BR+2, where R represents a non-specific substituent. Being electron-deficient, boranylium ions form adducts with <a href="/facts/Lewis_base/qlLqRvg2">Lewis bases</a>. Boranylium ions have historical names that depend on the number of coordinated ligands: </p> <ul><li>[BR2]+: borinium</li> <li>[BR2L]+: borenium</li> <li>[BR2L2]+: boronium</li></ul>