in toluene Irradiation (UV/VIS); soln. of MnRe complex and CBr4 (molar ratio 1:200) in toluene irradiated with SP 2025 argon-ion laser at 514.5 nm at 183 K;

dichloromethane in dichloromethane Irradiation (UV/VIS); soln. of educt in CH2Cl2 irradiated with SP 2025 argon-ion laser at 514.5 nm, P(λ)=11 mW, T=293 K; not isolated; detected by IR;