Cationic Diiodo-Phosphoranides through Oxidative I-2 Addition to Tricyclic Phosphamethine Cyanines

Autor: Cicac-Hudi, Mario, Schlindwein, Simon H., Feil, Christoph M., Nieger, Martin, Gudat, Dietrich
Přispěvatelé: Department of Chemistry
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Popis: Reaction of methylene- and ethylene-bridged bis-imidazolium salts with white phosphorus in the presence of KOtBu furnished moderate yields of tricyclic bis-imidazolio-phosphanide halides. Further oxidation of the products with one equivalent of I-2 gave bis-imidazolio-diiodophosphoranide iodides. All newly prepared compounds were characterized by analytical and spectroscopic data and single-crystal XRD studies. DFT calculations provide evidence for substantial stabilization of cyclic bis-imidazolio-phosphanide cations by pi-conjugation effects and suggest describing the bis-imidazolio-diiodophosphoranide cations as charge-transfer complexes of dicationic iodophosphines with iodide.
Databáze: OpenAIRE