(BB)-Carboryne Complex of Ruthenium: Synthesis by Double B-H Activation at a Single Metal Center

The first example of a transition metal (BB)-carboryne complex containing two boron atoms of the icosahedral cage connected to a single exohedral metal center (POBBOP)Ru(CO)2 (POBBOP = 1,7-OP(i-Pr)2-2,6-dehydro-m-carborane) was synthesized by double B-H activation within the strained m-carboranyl pincer framework. Theoretical calculations revealed that the unique three-membered (BB)>Ru metalacycle is formed by two bent B-Ru σ-bonds with the concomitant increase of the bond order between the two metalated boron atoms. The reactivity of the highly strained electron-rich (BB)-carboryne fragment with small molecules was probed by reactions with electrophiles. The carboryne-carboranyl transformations reported herein represent a new mode of cooperative metal-ligand reactivity of boron-based complexes.

Keywords

Boron, Chemical activation, Metals, Praseodymium, Ruthenium compounds, Transition metals, Bond ordering, Electron-rich, Electrophiles, Highly strained, Metal centers, Metal ligands, Small molecules, Theoretical calculations, Ruthenium, boron, carboryne complex, electrophile, hydrogen, ruthenium complex, transition element, unclassified drug, chemical bond, chemical structure, cycloaddition, electron, nucleophilicity, ultraviolet irradiation

URI

https://oa.tib.eu/renate/handle/123456789/8996
https://doi.org/10.34657/8034

Citation

Eleazer, B. J., Smith, M. D., Popov, A. A., & Peryshkov, D. V. (2016). (BB)-Carboryne Complex of Ruthenium: Synthesis by Double B-H Activation at a Single Metal Center. 138(33). https://doi.org//10.1021/jacs.6b05172

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Chemie

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