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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.
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.
English: Chemical structure of the tribromide anion (Br3-) Date: 8 August 2011, 12:11 (UTC) Source: Own work: Author: Ed : Permission ... Tribromide; Global file usage.
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).
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 ...
Nitrogen tribromide reacts instantly with ammonia in dichloromethane solution at −87 °C to yield NBrH 2. [7] NBr 3 + 2 NH 3 → 3 NH 2 Br. It also reacts with iodine in dichloromethane solution at −87 °C to produce NBr 2 I, which is a red-brown solid that stable up to -20 °C. [7] NBr 3 + I 2 → NBr 2 I + IBr
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]