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Laboratory routes to the solvent-free materials are numerous. A well documented route involves the thermal decomposition of diazonium salts of [BF 4] −: [11] [PhN 2] + [BF 4] − → PhF + BF 3 + N 2. It forms by treatment of a mixture boron trioxide and sodium tetrafluoroborate with sulfuric acid: [12] 6 Na[BF 4] + B 2 O 3 + 6 H 2 SO 4 → 8 ...
In chemistry, trigonal planar is a molecular geometry model with one atom at the center and three atoms at the corners of an equilateral triangle, called peripheral atoms, all in one plane. [1] In an ideal trigonal planar species, all three ligands are identical and all bond angles are 120°.
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Molecular geometry is the three-dimensional arrangement of the atoms that constitute a molecule. It includes the general shape of the molecule as well as bond lengths , bond angles , torsional angles and any other geometrical parameters that determine the position of each atom.
Pure H[BF 4] has not been described. The same holds true for the superacids that are known by the simplified formulas H[PF 6] and H[SbF 6]. [4] [5] However, a solution of BF 3 in HF is highly acidic, having an approximate speciation of [H 2 F] + [BF 4] − (fluoronium tetrafluoroborate) and a Hammett acidity function of −16.6 at 7 mol % BF 3, easily qualifying as a superacid. [6]
Despite the low reactivity of the tetrafluoroborate anion in general, BF − 4 serves as a fluorine source to deliver an equivalent of fluoride. [2] The Balz–Schiemann reaction for the synthesis of aryl fluorides is the best known example of such a reaction. [3]
As confirmed by X-ray crystallographic studies, the copper(I) ion is coordinated to four almost linear acetonitrile ligands in a nearly ideal tetrahedral geometry. [2] [3] Similar complexes with other anions including the perchlorate, tetrafluoroborate, and nitrate are known. [1]
BF3 may refer to: Boron trifluoride, a chemical compound; Battlefield 3, a 2011 video game published by Electronic Arts; Star Wars Battlefront (2015) video game, the third game in the series; British Formula Three Championship