A Stable, Crystalline Beryllium Radical Cation

Guocang Wang, Jacob E. Walley, Diane A. Dickie, Sudip Pan, Gernot Frenking, Robert J. Gilliard

Research output: Contribution to journalArticlepeer-review

94 Scopus citations

Abstract

The alkaline-earth elements (Be, Mg, Ca, Sr, and Ba) strongly favor the formation of diamagnetic compounds in the +2 oxidation state. Herein we report a paramagnetic beryllium radical cation, [(CAAC)2Be]+⢠(2) [CAAC = cyclic (alkyl)(amino)carbene], prepared by oxidation of a zero-valent beryllium complex with 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO). Compound 2 was characterized by EPR spectroscopy, elemental analysis, X-ray crystallography, and DFT calculations. Notably, the isolation of 2 represents the first s-block charged radical and the first crystalline beryllium radical.

Original languageEnglish
Pages (from-to)4560-4564
Number of pages5
JournalJournal of the American Chemical Society
Volume142
Issue number10
DOIs
StatePublished - 11 Mar 2020
Externally publishedYes

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