UV-laser photochemistry: nitrogen extrusion from the azoalkane 4,5-diazatricyclo[4.4.0.03,8]dec-4-ene. Lifetime determination of bicyclo[2.2.2]Octa-2,5-diyl by dioxygen trapping.
作者:Waldemar Adam、Sven Grabowski
DOI:10.1016/s0040-4039(00)82408-9
日期:1988.1
The tripletlifetime of bicyclo[2.2.2]octa-2,5-diyl (), generated by sensitized laser photolysis of 4,5-diazatwist-4-ene (), was determined by dioxygen trapping. Therewith it constitutes the first localized, bicyclic triplet 1,4-diradical that could be trapped; despite its rigidity, it possesses a surprisingly short lifetime (3τ ca. 1 ns).