Molecular Bismuth Cations: Assessment of Soft Lewis Acidity.

ABSTRACT: Three-coordinate cationic bismuth compounds [Bi(diaryl)(EPMe₃ )][SbF₆ ] have been isolated and fully characterized (diaryl=[(C₆ H₄ )₂ C₂ H₂ ]^2- , E=S, Se). They represent rare examples of molecular complexes with Bi⋅⋅⋅EPR₃ interactions (R=monoanionic substituent). The ³¹ P NMR chemical shift of EPMe₃ has been found to be sensitive to the formation of LA⋅⋅⋅EPMe₃ Lewis acid/base interactions (LA=Lewis acid). This corresponds to a modification of the Gutmann-Beckett method and reveals information about the hardness/softness of the Lewis acid under investigation. A series of organobismuth compounds, bismuth halides, and cationic bismuth species have been investiga

SUBMITTER: Ramler J 

PROVIDER: S-EPMC7818483 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature