Borate

The borate ion is BO33-.

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A borate is a compound of boron and oxygen with more electropositive elements.

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Boron found in nature is always some kind of borate mineral. Sometimes it is combined with silicate to form a borosilicate.

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Borate exists in many forms. In acid conditions, we have boric acid, H3BO3. And in more basic conditions, we have dihydrogen borate ion, H2BO3-, the hydrogen borate ion, HBO32-, and finally borate ion, BO33-.

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Borate can form many polymeric ions. Especially common is the tetraborate ion, B4O72-; also we have the hydrogen tetraborate ion, HB4O7-. We also find triborate, pentaborate, and so on. The various metaborate ions have an empirical formula of BO2-, and form metaborate compounds.

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For the borate compounds, formation of complicated infinite anion structures is extensive, perhaps beaten only by silicates.

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Common borate salts include sodium metaborate, NaBO2, and sodium tetraborate, Na4B4O7. The latter also occurs naturally as borax.

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The mining of boron minerals is often referred to as borate mining. Various forms of borate are used as wood preservatives.

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Borate esters include trimethyl borate, B(OCH3)3, which is used as a precursor to boronic esters for Suzuki couplings.

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Boron: : This article is about the chemical element. See Boron, Territoire de Belfort for the commune of the Territoire de Belfort d?partement in France. See Robert de Boron for the medieval poet....

Oxygen: :This article is about the chemical element oxygen. For other usage, see Oxygen (disambiguation)....

Silicate: In chemistry, a silicate is a compound consisting of silicon and oxygen (SixOy), one or more metals, and possibly hydrogen. It is also used to denote the salts of silica or of one of the silicic acids....