Kasteel Twikkelerf 94;
Tilburg;
The Netherlands;
Pentavalent; Phosphorus; and; Carbon; Compounds; σ*-Electron-Addition; Single-Crystal; Electron; Spin; Resonance; (ESR); Model; and; Ab; Initio; Calculations; Differences; in; SN2(C); vs.; SN2(P); Mechanism;