Carboranes (or carbaboranes) are electron-delocalized (non-classically bonded) clusters composed of boron, carbon and hydrogen atoms.[1] Like many of the related boron hydrides, these clusters are polyhedra or fragments of polyhedra. Carboranes are one class of heteroboranes.[2]
In terms of scope, carboranes can have as few as 5 and as many as 14 atoms in the cage framework. The majority have two cage carbon atoms. The corresponding C-alkyl and B-alkyl analogues are also known in a few cases.
^Grimes, R. N., Carboranes 3rd Ed., Elsevier, Amsterdam and New York (2016), ISBN 9780128018941.
^Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 181–189. ISBN 978-0-08-037941-8.
Carboranes (or carbaboranes) are electron-delocalized (non-classically bonded) clusters composed of boron, carbon and hydrogen atoms. Like many of the...
Carborane acids H(CXB 11Y 5Z 6) (X, Y, Z = H, Alk, F, Cl, Br, CF3) are a class of superacids, some of which are estimated to be at least one million times...
of this kind is fluoroantimonic acid. Another group of superacids, the carborane acid group, contains some of the strongest known acids. Finally, when...
Metal–carborane complexes (metallacarboranes), a very large and diverse family in which main-group or transition metal ions are coordinated to carborane ligands...
Halides of carbon without hydrogen (e.g., CF4 and CClF3), phosgene (COCl2), carboranes, metal carbonyls (e.g., nickel tetracarbonyl), mellitic anhydride (C12O9)...
concentrated weak acids are corrosive, but there are exceptions such as carboranes and boric acid. The second category of acids are Lewis acids, which form...
metalation of neutral carboranes. Illustrative are the six-and seven-vertex cages prepared from closo-C2B3H5. Reaction of this carborane with iron carbonyl...
[citation needed] The hydronium ion also forms stable compounds with the carborane superacid H(CB11H(CH3)5Br6). X-ray crystallography shows a C3v symmetry...
tetraiodide (CI4), and a large number of other carbon-halogen compounds. A carborane is a cluster composed of boron and carbon atoms such as H2C2B10H10. There...
rules useful for predicting the structures of clusters such as borane and carborane clusters. The electron counting rules were originally formulated by Kenneth...
isomers exist, but most common is 1,2-dicarbollide derived from ortho-carborane. These dianions function as ligands, related to the cyclopentadienyl anion...
patterns seen in hydrocarbons. Hybrids of boranes and hydrocarbons, the carboranes are also well developed. The development of the chemistry of boranes led...
Salts of benzenium ion can be isolated when benzene is protonated by the carborane superacid H(CB11H(CH3)5Br6). The benzenium salt is crystalline with thermal...
boranes (boron hydrides) and aluminium complexes, as well as in clustered carboranes. Oxidation of hydrogen removes its electron and gives H+, which contains...
pointed out that for o-carborane, which has a very strong B−H stretch at 2575 cm−1, the "onion-like odor of crude commercial o-carborane is replaced by a pleasant...
strongest Brønsted acids in general, with an acidity exceeded only by the carborane acids. Notably, triflidic acid is estimated to have an acidity 104 times...
ortho-carborane with the formula B10C2H10. They are also called 1,2-dehydro-o-carboranes. The hydrogen atoms on the C2 unit in the parent o-carborane are...
with the required burning time. More exotic materials can be used, e.g. carboranes. For special applications, pyrophoric igniters can be used which burst...
carbide, include discrete B12 icosahedra within their crystal structures. Carborane acids also have molecular structures approximating regular icosahedra...
of four covalent bonds, other exotic bonding schemes are also known. Carboranes are highly stable dodecahedral derivatives of the [B12H12]2- unit, with...
cations, to carboranes, carbon-boron cluster chemistry compounds that can be halogenated to form reactive structures including carborane acid, a superacid...
"arachno" clusters, in turn react with acetylene to give the "closo" ortho-carborane: B10H12·2L + C2H2 → C2B10H12 + 2 L + H2 Decaborane(14) is a weak Brønsted...
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