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The structure of the reaction product of white phosphorus and sodium in diglyme which exhibits a low field AB 2  system in the  31 P{ 1 H} NMR spectrum [4] has been reexamined. According to the results of a complete analysis of its proton coupled  31 P NMR spectrum (ABB′XX′ system), the compound is the hitherto unknown 1,2,3-triphosphacyclopentadienide ion P 3 (CH) 2  ⊖  (4), and not the triphosphacyclobutenide ion P 3 CH 2  ⊖ (3) previously assumed [4]. The parameters of the Ρ,Η-coupled  31 P NMR spectrum of the tetraphosphacyclopentadienide ion P 4 CH ⊖  (2) have also been calculated.

zeitschrift für naturforschung b

Beiträge zur Chemie des Phosphors, 204. Zur Existenz eines Triphosphacyclobutenid-Ions P 3 CH 2  Ɵ  / Contributions to the Chemistry of Phosphorus, 204. On the Existence of a Triphosphacyclobutenide Ion P 3 CH 2  e