BORON COMPOUNDS ASPECTS

Research Corp. "Boron Compounds (Boron Hydrides, Commercial Aspects)" in ECT3rd ed., Vol. 4, pp. 183—187, by G. B. Dunks, Union Carbide Corp. 

Economic Aspects and Uses. The principal producers in the United States are U.S. Borax and Chemical Corp., North American Chemicals Co., and American Borate Corp. Their combined aimual capacity in 1989 was reported to be 735,000 metric tons of equivalent boron oxide [1303-86-2], B2O2 (20). Of this toimage, 50% is exported. About 30% of boron compounds are used in glass fiber insulation. Another 30% is used in other type fibers and borosihcate glasses. Boron is also used in soaps and detergents, fire retardants, and agriculture (see Boron compounds). 

Film, photographic -use of amineborane complexes [BORON COMPOUNDS - COMMERCIAL ASPECTS] (V ol 4) -use m x-ray detection [MEDICAL IMAGING TECHNOLOGY] (Vol 16)... 

Two aspects of the boron chemistry of this class of compounds are particularly relevant First, synthesis and properties of organodiboron derivatives, and, indeed, even authentic synthetic failure in this area, are of interest in comparison with the rich organic chemistry of monoboron derivatives. Second, the chemistry of subvalent boron compounds and their... 

Boron compounds, subvalent, 193-194 Boron-containing compounds, See also Diboron compounds Boryl complexes, 165 Borylene complexes bridged, 166-176 molecular structure data, 172 reactivity, 170-171 spectroscopic and structural aspects, 172-176... 

A brief overview of some of the most important synthetic routes to organoboranes, that is, (1) transmetallation reactions, (2) the boration of unsaturated compounds, and (3) C-H activation wih be given. General aspects of these methodologies will be covered and illustrated with selected recent hterature examples. While a large number of transformations are known that convert one boron compound to another, the diversity of these methods does not allow for fiiU treatment in this context. Detailed information is given in several excellent comprehensive reviews that have been published. ... 

Much of the early work on the B shifts of simple ter- and tetra-covalent boron compounds, complexes, and some simple borane derivatives, has been reviewed by Emsley et al. The review of B shifts by Schaeffer,although published earlier, is a more comprehensive account of this particular subject, although the text is primarily concerned with borane derivatives. Since the last review, there have been only very brief articles dealing with some particular aspect of the B resonance investigations these articles are mentioned in the appropriate sections of the accompanying text. 

Boric oxides, boric acids, and metal borates are of primary importance in any discussion of boron chemistry since these include essentially all boron minerals and the vast majority of boron compounds produced and used worldwide on a weight basis. Reviews of this chemistry and the commercial aspects of this general subject are available. ... 

Boron.—Several articles have appeared in which aspects of the reaction mechanisms of boron compounds have been discussed. 

Besides the interest in the basic aspects of the chemistry of polyhedral boron compounds, considerable effort has been put in the development of high-energy fuels for aircraft and rocket propulsion [6]. Other potential applications of the boron cluster compounds are presented in the review by J. PleSek [8]. 

The properties of materials in their nanodimensions vary from those in their bulk form. These variations open up several new applications. A variety of boron and boron-based nanomaterials designed and prepared to date have been found to be nsefnl in energy, space, and other applications. Boron nitride nanotnbes (BNNTs) are useful for hydrogen storage and space applications, while boron nanorods (BNRs) are considered to be useful as rocket fuels. In the following chapters, detailed discussions are made on these versatile aspects of boron compounds in different fields of applications. 

As shown, using B-Base simplifies a fast comparison between substructures and related shift values from NMR experiments. An important additional aspect is the possibility of a comparative overall access to published boron NMR data. Visualisation of shift ranges for various classes of boron compounds via bar graphs as illustrated by Figure 2 appears to be an obvious application in order to evaluate the contents of B-Base. 

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