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Oxoborane
In chemistry, an oxoborane is any chemical compound containing a boron atom with a terminal oxygen atom. The compound class is of some relevance to academic research. The parent compound, HBO, itself called "oxoborane", together with derivatives FBO (fluorine), ClBO chlorine, BrBO bromine, HOBO (hydroxyl) and MeBO (methyl) have been detected in matrix isolation or in the gasphase at high temperature.〔''Inorganic chemistry'', Egon Wiberg,Nils Wiberg,Arnold Frederick Holleman〕〔Westcott, S. A. (2010), ''BO Chemistry Comes Full Circle''. Angewandte Chemie International Edition, 49: 9045–9046. 〕 In these compounds the boron and oxygen form a triple bond prone to cyclotrimerization to boroxines.
The first stable oxoborane with a double bond of the type (R2N)2B=O was described in 2005.〔''Synthesis and Characterization of a Coordinated Oxoborane: Lewis Acid Stabilization of a Boron−Oxygen Double Bond'' Dragoslav Vidovic, Jennifer A. Moore, Jamie N. Jones, and Alan H. Cowley J. Am. Chem. Soc., 2005, 127 (13), pp 4566–4567 〕 In this compound the oxygen atom is coordinated to aluminium chloride. The BO bond length is 130 pm (compare to 136 pm in regular boronic acids). Another such system was described in 2011 〔Wang, Y., Hu, H., Zhang, J. and Cui, C. , ''Comparison of Anionic and Lewis Acid Stabilized N-Heterocyclic Oxoboranes: Their Facile Synthesis from a Borinic Acid''. Angewandte Chemie, n/a. 〕
A stable compound with a BO triple bond is trans-() with platinum coordinated to the BO unit.〔''Oxoboryl Complexes: Boron−Oxygen Triple Bonds Stabilized in the Coordination Sphere of Platinum'' Holger Braunschweig, Krzysztof Radacki and Achim Schneider Science 16 April 2010 Vol. 328 no. 5976 pp. 345-347 〕 In this compound the BO bond length is 120 picometers.
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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