Bismuth bromide

Brom-wasserstoffsaure, /. hydrobromic acid, -wismut, tn. n. bismuth bromide, -zahl, /. bromine number, -zink, n. zinc bromide, -zinn, n. tin bromide. 

Wismut-bleierz, n. schapbachite. -blende, /. bismuth blende, eulytite. -blUte, /. bismuth Ocher, bismite, -bromid, n. bismuth bromide, -butter, /. (Old Chem.) butter of bismuth (bismuth trichloride), -chlorid, n. bismuth chloride, bismuth trichloride, wismuten, v.t. solder with bismuth or bismuth solder. 

Sandri (15) reported the formation of characteristic crystals with cadmium bromide-hydrobromic acid, bismuth iodide-potassium iodide, and bismuth bromide-hydrobromic acid, with compositions CdBr2 HBr CgHgN 4H 0, HBiI CgHoN, and HBiBr CgHgN, respectively. 

Bismuth(III) bromide, 4 21 Bismuth bromide sulfide (19 3 27), 4 24 Bismuth bromosulfide, 4 24 Bismuth carboxylates, 4 25 Bismuth chloride, 4 6 Bismuth(III) chloride, 4 19-20 Bismuth chlorosulfide, 4 24 Bismuth compounds, 4 16-43 alloy-like superconducting, 4 18t analysis, 4 17... 

Bi24Br o03i (s) Bismuth Bromide Oxide Bl24Brio03i (s)... 

Tetraethylarsonium bromide forms a deli<(uescent, crystalline mass, very soluble in water ancitron yellow crystals. 

Synthesis of tris-(o-deuteriophenyl)bismuth and bis(o-deuteriophenyl)bismuth bromide... 

Bis(o-deuteriophenyl)bismuth bromide 3 has been obtained similarly to PhjBiBr, in the redistribution reaction of 2 moles of 1 and 1 mole of BiBrj (equation 2). 

Bismuth fluoride (Bip3) is found in the form of white or gray dimorphic crystals, practically insoluble in water, but soluble in concentrated hydrofluoric acid with the formation of complexes. It volatilizes slowly with partial decomposition at high temperatures. Bismuth bromide (BiBr3) is found as yellowish crystals, soluble in aqueous alkali halides and dilute hydrochloric acid, but practically insoluble in alcohols. It is readily decomposed by water to give bismuth oxybromide BiOBr. Bismuth iodide (BiU) is a black fine crystalline solid with a metallic sheen, practically insoluble in water, but slowly decomposes in hot water. It dissolves in liquid ammonia, aqueous potassium iodide, hydriodic acid and hydrochloric acid, but not so much (ca. 3.5%) in absolute ethanol. When exposed to air for a prolonged time, it is slowly converted to bismuth iodate (Bi(I03)3). Bismuth fluoride of 98% purity costs US 24.30 ( 6200) per 25 g, bromide of 98% purity US 24.90 ( 6200), and iodide of 99% US 34.50 ( 8600). These halides are all corrosive and moisture-sensitive. 

Bismuth bromide (1.84 g, 4.11 mmol) and Cd(C(jF5)2-diglyme solvate (3.83 g, 6.60 mmol) were dissolved in acetonitrile (10 ml) and the solution was heated at 50°C for 12 h. The solvent together with traces of diglyme and pentafluorobenzene were distilled off, and the gray solid residue was sublimed twice at 60°C/2 X lO mmHg to give the product (2.07 g, 71%) [87JOM(334)323]. 

Scheme 5.16. Bismuth bromide-catalyzed formation of cyclic carbonates from epoxides and DMF [97CC95].

As an extension of this oxygenative C-C bond fission, cyclic carbonates are prepared in good yield from terminal epoxides and DMF using bismuth bromide as a catalyst and molecular oxygen as an oxidant (Scheme 5.16). This is the first successful use of bismuth bromide as the catalyst for oxidative functionalization [97CC95]. Ph3BiF2 is examined as a catalyst for this reaction [98RCB1607]. 

Bismuth bromide is also found to be useful as a Lewis acid catalyst... 

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