in further solvent(s) Irradiation (UV/VIS); irrdn. (λ 436 nm) of degassed isopentane soln. of educt contg. 1-pentene; monitored by IR and UV;

in further solvent(s) Irradiation (UV/VIS); irrdn. (λ 436 nm) of degassed olefin-free isopentane soln. of educt; identified by IR;