Perfunctionalized dodecaborate clusters as stable metal free active materials for charge storage. Lipscomb recognized that, in all boron hydrides, each b atom has a normal 2electron bond to at least one h atom bh. The boron hydrides were first systematically synthesized and characterized during the period 1912 to roughly 1937 by the german chemist alfred stock. William lipscomb received the nobel prize in chemistry in 1976 for studies on the structures of boron hydrides illuminating the problems of chemical bonding. Boranes and their heteroatomsubstituted derivatives, including metallaboranes and metallacarboranes, are nonclassical molecules, 1 in that the bonding in the cage skeleton cannot be described entirely in terms of ordinary electronpair bonds between each pair of bonded atoms. The action of a metal hydride with boron produced diborane.
Boranes boranes are compounds composed solely of boron and. Borane definition, any of the compounds, both neutral and anionic, of boron and hydrogen with formulas ranging from b2h6 to b20h16. Annealing of these amorphous powders followed by powder xray diffraction measurements revealed. Diborane structure of diborane, preparation, properties. The development of the chemistry of boranes presented a number of challenges. Stanford libraries official online search tool for books, media, journals, databases, government documents and more. Diborane readily hydrolyzes in water to give hydrogen gas and boric acid. In the cases of cobalt and nickelassisted ab hydrolysis, amorphous powders are formed that are highly catalytically active for hydrogen generation.
The acs chemical society decided that the us would call the. Spinney massachusetts institute of technology february 17, 2009 5. Electronic structure of 10vertex arachnoborane and carborane clusters. This approach is common in the industrial production of diborane. Stocks classic investigations, 10 and the numerous compounds prepared by his group during the following 20 y proved to be the forerunners of an amazingly diverse and complex new area of chemistry. In the past, borane molecules were often labeled electrondeficient because of their multicenter bonding in which a pair of bonding electrons links more than two atoms, as in 3center2electron bonds. An important class of electrondeficient borane compounds. Polyhedral boranes wades rules heteroboranes molecular orbital picture outline 1 polyhedral boranes 2 wades rules. Boranes is the name given to the class of synthetic hydrides of boron with generic formula b x h y. Generally, atoms with same outerorbital structure appear. However, additional bonds of several types occur, and he.
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