Fusing 10-vertex closo-carborane anions with N-heterocyclic carbenes. Issue 75 (8th September 2022)

• Record Type: Journal Article
• Authors: Tej Raviprolu, Varun; McArthur, Sarah E.; Banda, Isaac; Gregory, Aaron; McArthur, Scott G.; Fisher, Steven P.; Lavallo, Vincent
• Is Part Of: Chemical communications. Volume 58:Issue 75(2022)
• Page Start: 10580
• Page End: 10582
• Publication Date: 2022-09-08
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d2cc02596e
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Discovered by Knöth in 1964, the 10-vertex closo -carborane anion [HCB9 H9 1− ] is a classical bicapped square antiprism that contains an unusual pentacoordinate carbon center. Abstract : Discovered by Knöth in 1964, the 10-vertex closo -carborane anion [HCB9 H9 1− ] is a classical bicapped square antiprism that contains an unusual pentacoordinate carbon center. Compared to its larger icosahedral cousin [HCB11 H11 1− ], few investigations have been made into its use as a weakly coordinating anion or as a ligand substituent. Here we show that it is possible to prepare both a dianionic N-heterocyclic carbene (NHC) Li + adduct as well as a trianionic C-2, C-5 dilithio species featuring two 10-vertex carborane anion substituents. All compounds were characterized via multinuclear NMR spectroscopy, single crystal X-ray diffraction, and HRMS when possible.