Phosphorus-31 and selenium-77 nuclear magnetic resonance spectra of tetraphosphorus triselenide

Abstract

Phosphorus-31 and selenium-77 n.m.r. spectra have been measured for P₄Se₃ containing ⁷⁷Se in natural abundance, and assigned to give all chemical shifts and coupling constants for the molecules P₄^∘Se₃ and P₄⁷⁷Se^∘Se₂, where ^oSe represents any natural isotope of Se other than ⁷⁷Se. Sufficient transitions for the molecule P₄⁷⁷Se₂^oSe could be observed in its ³¹P n.m.r. spectrum to allow ²J_SeSe to be found.