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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.
Boron tribromide, BBr 3, is a colorless, fuming liquid compound containing boron and bromine. Commercial samples usually are amber to red/brown, due to weak bromine contamination. Commercial samples usually are amber to red/brown, due to weak bromine contamination.
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).
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.
The trihalides adopt a planar trigonal structure. These compounds are Lewis acids in that they readily form adducts with electron-pair donors, which are called Lewis bases. For example, fluoride (F −) and boron trifluoride (BF 3) combined to give the tetrafluoroborate anion, BF 4 −. Boron trifluoride is used in the petrochemical industry as ...
A demonstration of the reaction of the exothermic reaction of the strong Lewis acid (Al 2 Br 6) and strong Lewis base (H 2 O). Al 2 Br 6 dissociates readily to give the strong Lewis acid, AlBr 3. Regarding the tendency of Al 2 Br 6 to dimerize, it is common for heavier main group halides to exist as aggregates larger than implied by their ...
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.
Arsenic tribromide can be prepared by the direct bromination of arsenic powder. Alternatively, arsenic(III) oxide can be used as the precursor in the presence of elemental sulfur: 2 As 2 O 3 + 3 S + 6 Br 2 → 4 AsBr 3 + 3 SO 2. Arsenic tribromide is a highly water soluble crystalline arsenic source for uses compatible with bromides and lower ...