Oxidation of 1,3-Diphosphacyclobutane-2,4-diyl with Ammoniumyl Antimonate and EPR Study of the Corresponding Cation Radical

2006/09/09 by Masaaki Yoshifuji, Anthony J. Arduengo, Tatyana A. Konovalova +3 · 4 citations
Chemistry · #Antimonate #Chemistry #Electron paramagnetic resonance #Inorganic chemistry #Ion #Medicinal chemistry #Nuclear magnetic resonance #Organic chemistry #Organometallic Complex Synthesis and Catalysis #Photochemistry #Radical Photochemical Reactions #Radical ion #Synthesis and characterization of novel inorganic/organometallic compounds

paper · doi:10.1246/cl.2006.1136

openalex publication_date 2006/09/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11

Abstract

Abstract A sterically protected biradical species, 1-tert-butyl-3-methyl-2,4-bis(2,4,6-tri-tert-butylphenyl)-1,3-diphosphacyclobutane-2,4-diyl was allowed to react with tris(4-bromophenyl)ammoniumyl hexachloroantimonate as an oxidant and the product was analyzed by EPR to show that the biradical was oxidized to give the corresponding radical cation species. The structure of the cation radical was also supported by ab initio calculations on a model compound.

Citations

• 2-(2,4,6-tri-tert-butylphenyl)-1-phosphaethin, 1,4-bis-(trimethylsiloxy)-1,4-bis-(2,4,6-tri-tert-butylphenyl)-2, 3-diphosphabutadien

Cited by

• Synthesis and properties of oligo(biradicals) composed of 1,3‐diphosphacyclobutane‐2,4‐diyl units and benzyl‐type linkers
• Diverse reactions of sterically-protected 1,3-diphosphacyclobutane-2,4-diyls with hydride
• Modeling the Direct Activation of Dihydrogen by a P2C2 Cyclic Biradical: Formation of a Cyclic Bis(P−H λ5-phosphorane)
• Anthony J. Arduengo [wikipedia]