[​4+2] versus [​2+2] Homodimerization in P(V) Derivatives of 2,4-Disubstituted Phospholes

Figure 1

Molecular structure of 5d: (a) top-view of whole molecule with 50% probability ellipsoids; hydrogens and solvent molecule omitted for clarity; (b) side-view of tricyclic 5;4;5] pattern showing the syn-anti arrangement.

(a)

(b)