1.
Angew Chem Int Ed Engl
; 37(8): 1083-1086, 1998 May 04.
Artículo
en Inglés
| MEDLINE
| ID: mdl-29711035
RESUMEN
The sterically demanding groups on the tricoordinate phosphorus atom, the π-electron acceptors substituted on the ring, and the dicoordinate phosphorus atoms within the ring are the most significant factors contributing to the planarity and aromaticity of the 1,2,4-triphosphole ring in 1. The Bird aromaticity index for 1 shows that it has the most pronounced aromatic character of all known phospholes.