Copper® bromide, solubility

Copper bromide (CuBr) Copper monobromide Copper(l-i-) bromide Copper(l) bromide Cuprous bromide EINECS 232-131-6 HSDB 270. Used as a catalyst in organic reactions. Solid mp = 504° bp B 1345° d = 4.72 slightly soluble in H2O. Atomergic Chemetals Cerac Hoechst Celanese Sigma-Aldrich Fine Chem. 

Ready et al. showed that the use of certain water-soluble fluxes or fusing (hot air solder level [HAST]) fluids could increase CAF formation. In examining a catastrophic field failure (see Fig. 56.9), Ready et demonstrated the presence of a copper-bromide containing salt between an innerlayer power plane and ground pin, separated by 0.005 in. Using a test coupon manufactured in the same lot as the failed product, they extracted the flux residues from an innerlayer of the multilayer board and used ion chromatography to match the residues from the board s innerlayer with the constituents of the flux. 

Rubidium metal alloys with the other alkaU metals, the alkaline-earth metals, antimony, bismuth, gold, and mercury. Rubidium forms double haUde salts with antimony, bismuth, cadmium, cobalt, copper, iron, lead, manganese, mercury, nickel, thorium, and 2iac. These complexes are generally water iasoluble and not hygroscopic. The soluble mbidium compounds are acetate, bromide, carbonate, chloride, chromate, fluoride, formate, hydroxide, iodide. 

Copper 11 halides are formed with chlorine, bromine and iodine, the chloride and bromide by reduction of the coppertll) halides with copper powder, and the iodide by reduction of coppertll) sulfate. CuSOj solulion with potassium iodide. The fluoride appears never to have been made, despite reports to the contrary. All are insoluble in H20. CoppertUl fluoride, CuF may be made from CuO and hydrofluoric acid at 400°C. coppertll) chloride. CuCl by dissolving the oxide or carbonate in HCI, and coppertll) bromide. CuBr from copper and bromine water coppertll) iodide. Cub, is unstable at room temperature with respect to decomposition intu Cul and iodine. The chloride and bromide are water-soluble, and ionic. The fluoride is only slightly water-soluble. Anhydrous copper(U) chloride. Cud , is monoclinic and its structure contains infinite-chain molecules formed by CuCLi groups that share opposite edges. CuBr. has a similar structure. 

The oxazolidin-2-ones 53 (R = H=CCH=CH2 or COEt) are obtained in a one-pot reaction of amino alcohol carbamates 52 with sodium hydroxide, followed by allyl bromide or propi-onyl chloride (94TL9533). A modified procedure for the preparation of chiral oxazolidin-2-ones 56 from a-amino acids 54, which avoids the hazardous reduction of the acids with borane and the intermediacy of water-soluble amino alcohols, is treatment of the methyl ester of the amino acid with ethyl chloro-formate to give 55, followed by reduction with sodium borohydride and thermal ring-closure of the resulting carbamate f95SC561). The 2-prop-ynylcarbamates 57 (R = Ts, Ac, Bz, Ph or allyl) cyclize to the methyleneoxazolidinones 58 under the influence of silver cyanate or copper(I) chloride/triethylamine (94BCJ2838). 

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