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Phosphorus tribromide, like PCl 3 and PF 3, has both properties of a Lewis base and a Lewis acid. For example, with a Lewis acid such as boron tribromide it forms stable 1 :1 adducts such as Br 3 B · PBr 3. At the same time PBr 3 can react as an electrophile or Lewis acid in many of its reactions, for example with amines.
2 Structure and properties. 3 Thermodynamic properties. 4 Spectral ... This page provides supplementary chemical data on phosphorus tribromide. Material Safety Data Sheet
Expressing resonance when drawing Lewis structures may be done either by drawing each of the possible resonance forms and placing double-headed arrows between them or by using dashed lines to represent the partial bonds (although the latter is a good representation of the resonance hybrid which is not, formally speaking, a Lewis structure).
In chemistry, the pentazenium cation (also known as pentanitrogen) is a positively-charged polyatomic ion with the chemical formula N + 5 and structure N−N−N−N−N.Together with solid nitrogen polymers and the azide anion, it is one of only three poly-nitrogen species obtained in bulk quantities.
Tribromide is the anion with the chemical formula Br 3 −, or salts containing it: . Tetrabutylammonium tribromide; Tetrabromophosphonium tribromide; Pyridinium perbromide; Sodium and potassium tribromides can be prepared by reacting NaBr or KBr with aqueous bromine.
The Lewis acidity of all the gallium trihalides, GaBr 3 included, has been extensively studied thermodynamically, and the basicity of GaBr 3 has been established with a number of donors. [2] GaBr 3 is capable of accepting an additional Br − ion or unevenly splitting its dimer to form [GaBr 4] −, a tetrahedral ion of which crystalline salts ...
Caesium tribromide is an inorganic compound with the chemical formula CsBr 3. It can be obtained by crystallization from a concentrated aqueous solution of caesium bromide containing large amounts of bromine , [ 3 ] or by the hydrothermal reaction of caesium bromide, caesium bromate , and hydrobromic acid , in which bromine is generated in situ.
Both polymorphs are monoclinic, but α-BiBr 3 is in space group P2 1 /a whereas β-BiBr 3 is in C2/m. α-BiBr 3 consists of pyramidal molecules whereas β-BiBr 3 is polymeric and adopts the AlCl 3 structure. BiBr 3 is the only group 15 trihalide that can adopt both molecular and polymeric structures. [3]