Synthesis of the First Example of the 12-Vertex-closo/12-Vertex-nido Biscarborane Cluster by a Metal-Free B-H Activation at a Phosphorus(III) Center

Yuen Onn Wong; Mark D Smith; Dmitry V Peryshkov

doi:10.1002/chem.201601194

Synthesis of the First Example of the 12-Vertex-closo/12-Vertex-nido Biscarborane Cluster by a Metal-Free B-H Activation at a Phosphorus(III) Center

Chemistry. 2016 May 10;22(20):6764-7. doi: 10.1002/chem.201601194. Epub 2016 Apr 8.

Authors

Yuen Onn Wong¹, Mark D Smith¹, Dmitry V Peryshkov²

Affiliations

¹ Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter St., Columbia, SC, 29208, USA.
² Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter St., Columbia, SC, 29208, USA. peryshkov@sc.edu.

PMID: 26990216
DOI: 10.1002/chem.201601194

Abstract

An unusual 12-vertex-closo-C2 B10 /12-vertex-nido-C2 B10 biscarborane cluster was synthesized through an unprecedented regioselective metal-free B-H activation by a sterically hindered P(III) center under mild conditions accompanied by cage-opening rearrangement. A combination of the electron-accepting properties of a carborane cage and steric enforcement of close interatomic contacts represent a new synthetic strategy for the activation of strong B-H bonds in carboranes.

Keywords: B−H activation; boron; cage compounds; metal-free reaction; phosphanes.

Publication types

Research Support, Non-U.S. Gov't