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A 3D Analogue of Phenyllithium: Solution‐Phase, Solid‐State, and Computational Study of the Lithiacarborane [Li−CB 11 H 11 ] −
Author(s) -
Dontha Rakesh,
Zhu TianCheng,
Shen Yunjun,
Wörle Michael,
Hong Xin,
Duttwyler Simon
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201910568
Subject(s) - phenyllithium , chemistry , delocalized electron , zincate , reactivity (psychology) , metalation , cluster (spacecraft) , reactive intermediate , stereochemistry , medicinal chemistry , computational chemistry , crystallography , organic chemistry , medicine , alternative medicine , pathology , zinc , computer science , programming language , catalysis
The lithiacarborane [Li−CB 11 H 11 ] − plays a central role in carborane chemistry, as it is a key intermediate to achieve the selective functionalization of the monocarba‐ closo ‐dodecaborate [CB 11 H 12 ] − for applications in various fields. Also, it is an organometallic species of fundamental interest because it represents a 3D analogue of phenyllithium featuring an exo C−Li bond in addition to the delocalized negative endo charge of the spherical cluster. For the first time, the elusive and highly reactive endo/exo formal dianion [CB 11 H 11 ] 2− has been isolated as its lithiate as well as zincate in pure form and fully characterized. DFT calculations corroborate the experimental findings and underscore the remarkably high reactivity of the lithiacarborane. Subsequent derivatizations demonstrate the relevance of its initial clean formation.