18-crown-6 ether in N,N,N',N',N'',N''-hexamethylphosphoric triamide T=35°C; Irradiation;

12 h; Irradiationcompetition reaction with biphenylyldiphenylmethyl anion, ΔG; Product distributionThermodynamic dataMechanism;

Irradiationrelative quantum yields of the quenched reaction; var. condensed aromatics as quenchers; effect of THF and DMSO on relative yields and quenching; Mechanism;