Phosphonium fullerides: isolable zwitterionic adducts of a phosphine with C₆₀.

ABSTRACT: Although fullerene derivatization has been extensively studied for decades, zwitterionic adducts with neutral Lewis bases are rare, and those with tertiary phosphines remain elusive. This work presents a combined experimental and computational study on the first isolable zwitterionic phosphonium fullerides. The reaction of tris(tetramethylguanidinyl)phosphine ((tmg)₃P) with C₆₀ results in the formation of the zwitterionic adducts (tmg)₃PC₆₀ and (tmg)₃PC₆₀P(tmg)₃ in quantitative yield. Stoichiometric studies demonstrate that up to two (tmg)₃P molecules can reversibly bind to C₆₀, forming bisphosphine adducts as regioisomeric mixtures with reduced P-C bond stability. Spectroscopic, crystallogra

SUBMITTER: Rothel MB 

PROVIDER: S-EPMC12207991 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature