Hydrides boron halides

Reactivity and Incompatibility DMSO reacts violently with strong oxidizers, many acyl halides, boron hydrides, and alkali metals. DMSO can form explosive mixtures with metal salts of oxoacids (sodium perchlorate, iron(III) nitrate). 

Dimethylsulfoxide Acyl and aryl halides, boron compounds, bromomethane, nitrogen dioxide, magnesium perchlorate, periodic acid, silver difluoride, sodium hydride, sulfur trioxide... 

P. F. Strehle, and P. A. Tierney Singly-bridged Compounds of the Boron Halides and Boron Hydrides. J. Amer. chem. Soc. 79, 2020 (1957). 

The interaction of platinum halides with boron hydrides has been used to couple boranes. In the presence of PtBr2 at 25 °C the compound 1,2 -(B5H8)2 can be formed from B5H9 (equation 91). 2... 

Various boron compounds have been used as rocket fuels, diamond substitutes, and additives to aluminum alloys to improve electrical and thermal conductivity, as well as for grain refining. Boron hydrides are sensitive to shock and can detonate easily. Boron halides ate corrosive and toxic. 

Boron Hydride Derivatives. Alkyl boranes can be prepd by alkylation of key intermediates, of diborane or of higher boranes. Alkyiation of a borane will proceed more readily if a functional group, such as a halogen or an active merai arom, is attached to the borane. For example, a halo-borane may react with a metal aikyl to produce an alkyl borane, or a metal polyhydropolyborate may react with an alkyl halide to produce an alkyl borane(Ref 35). Boranes may be alkylated or ary-iated with an unsaturated hydrocarbon(Ref 13). Alkoxy derivs of boranes can be prepd by allowing a borane to react with an appropriate alccho (Ref... 

Boron. Boron hydride, dl-, penta- and deca-, and the boron halides, trichloride, trifluoride, are the chief compounds of interest. No adequately documented collection method exists for any of these compounds, and most recent work in the area has been futile. Boron oxide is the only compound that can be analyzed with certainty by P CAM 173. This compound is a nuisance dust like aluminum oxide, and the AAS method provides a means of identifying the compound. 

Many phosphine-borane complexes Y3P BZ3 have been characterized. They include compouuds where Y = alkoxy, aUcyl, amino, halide, and hydride groups, and Z = alkyl, halide, and hydride. The stabilities of these complexes vary widely depending on the Lewis acidity and basicity of the boron and phosphorus moieties, respectively. The relative stabilities of Lewis acid-base complexes with BH3 are R3P > R3N > R3AS > R3Sb, but with BF3 the order is R3N > R3P > R3AS > RsSb. The stabihties of the borou halide complexes of phosphines follow the same order as the amine complexes BI3 > BBrs > BCI3 > BF3. 

Boron halides, 146-148 Boron hydride, ammoniates of, 154 balance equations and, 138 nuclear resonance studies,... 

This volume has been written for those chemists and biochemists who may never themselves do X-ray diffraction analyses of crystals, but who need to be able to understand the results of such studies on structures of immediate interest to them. The fields of structural biology and chemistry have blossomed in the years since X-ray diffraction was discovered in 1912. For example, the three-dimensional structures of benzene, graphite, the alkali halides, the boron hydrides, the rare gas halides, penicillin, vitamin Bjj, hemoglobin, lysozyme, transfer RNA, and the common-cold rhinovirus have been determined and, in each case, the results have greatly increased our understanding of fundamental chemistry and biochemistry. 

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