Metal hydrides decaborane

An entry into the chemistry of mdo-decaborates is provided by utdo-B oH 4. As already mentioned, decaborane BioHi4 is easily deprotonated even in aqueous medium to yellow B10Hb and with strong bases, such as alkali metal hydrides, even further to the colorless anion B10H122-. This is summarized in the reversible reactions shown in Eq. (59). 

There, are at least six definitely characterized boron hydrides, as follows diborane(6), B H tetraborane(lO), B4 H, pentaborane(9) (stable), B3 H pentaborane( 11) (unstable). B5 Hu hexaborane(lO). H10 and decaborane(14). Bio H14. In these names, note that the prefix denotes the number of boron atoms, while the figure in parentheses denotes the number of hydrogen atoms. In addition to these compounds, which are all gases or volatile liquids except decaborane(L4), decomposition of the lower boron hydrides yields colorless or yellow solid boron hydrides, ranging in composition from (BItysty to (BII). This readiness to polymerize is evidence of the reactivity of these borane compounds, which readily form additional products with ammonia, with the amalgams of the active metals, and with many otganic compounds, as well as with CO. 

CBr4 Noncombustible solid. Violent reaction with fluorine, hexylcyclo-hexyldilead, oxygen, potassium, potassium acetylene-1,2-dioxide, sodium azide, uranium(III) hydride. Mixtures with finely divided aluminum, lithium, magnesium, potassium-sodium alloy, titanium, zinc can form a friction- or shock-sensitive explosive material. Incompatible with decaborane. Attacks active metals. 

ARCTON (75-46-7) Violent reaction with alkaline earth and alkali metals. Reacts violently with aluminum oxide at elevated temperatures, producing hydrogen chloride and phosgene vapors. Incompatible with beryllium, decaborane, diborane, difluoromethylene dihypofluorite, fluorine, lithium, magnesium, potassium, potassium acetylene-1,2-dioxide, potassium acetylene-1,2-dioxide, potassium sodium alloy, sodium amide, titanium, uranium hydride, zinc. Attacks aluminum, magnesium, zinc, and their alloys. 

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