Tl₂[Aryl₂P₄]: A Thallium Complexed Diaryltetraphosphabutadienediide and its Two‐Electron Oxidation to a Diaryltetraphosphabicyclobutane, Aryl₂P₄

Abstract

An analogue with P: Reaction of the “dithallene” (TlArequation/tex2gif-sup-1.gif)2 (1; Arequation/tex2gif-sup-2.gif=C6H3-2,6-(C6H2-2,6-iPr2)2) with P4 afforded Tl2[P4(Arequation/tex2gif-sup-3.gif)2] (2), a thallium complexed diaryltetraphosphabutadienediide. The negative charge in the anion of 2 is delocalized over the P4 array to afford an average PP bond order of approximately 1.33.