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The icosahedral charge-neutral closo-carboranes, 1,2-, 1,7-, and 1,12- C 2 B 10 H 12 (informally ortho-, meta-, and para-carborane) are particularly stable and are commercially available. [10] [11] The ortho-carborane forms first upon the reaction of decaborane and acetylene. It converts quantitatively to the meta-carborane upon heating in an ...
ortho-Carborane is the organoboron compound with the formula C 2 B 10 H 12. The prefix ortho is derived from ortho. It is the most prominent carborane. This derivative has been considered for a wide range of applications from heat-resistant polymers to medical applications. It is a colorless solid that melts, without decomposition, at 320 °C
In organoboron chemistry, a carboryne is an unstable derivative of ortho-carborane with the formula B 10 C 2 H 10. [1] They are also called 1,2-dehydro-o-carboranes. The hydrogen atoms on the C2 unit in the parent o-carborane are missing. The compound resembles and is isolobal with benzyne.
One example is [B 12 (CH 3) 12] 2-and its radical derivative [B 12 (CH 3) 12] −. [16] Related cluster compounds with carbon vertices are carboranes; the best known is orthocarborane, C 2 B 10 H 12. Carboranes have few commercial applications. Anionic derivatives such as [C 2 B 9 H 11] 2−, called dicarbollides, ligate similarly to ...
Carborane acids H(CXB 11 Y 5 Z 6) (X, Y, Z = H, Alk, F, Cl, Br, CF 3) are a class of superacids, [1] some of which are estimated to be at least one million times stronger than 100% pure sulfuric acid in terms of their Hammett acidity function values (H 0 ≤ –18) and possess computed pK a values well below –20, establishing them as some of the strongest known Brønsted acids.
A borane is a compound with the formula BR x H y although examples include multi-boron derivatives. A large family of boron hydride clusters is also known. In addition to some applications in organic chemistry , the boranes have attracted much attention as they exhibit structures and bonding that differs strongly from the patterns seen in ...
Some cobalt derivatives of carboranes have been commercialized for sequestering 137 Cs from radioactive waste. [16] Boranes have a high specific energy of combustion compared to hydrocarbons, making them potentially attractive as fuels or igniters.
Various isomers exist, but most common is 1,2-dicarbollide derived from ortho-carborane. [1] These dianions function as ligands, related to the cyclopentadienyl anion . Substituted dicarbollides are also known such as [C 2 B 9 H 10 (pyridine)] − (pyridine bonded to B) and [C 2 R 2 B 9 H 9 ] 2- (R groups bonded to carbon).