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 triplet lifetime 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).
通过双氧捕集测定由4,5-二氮杂双环四烯()的敏化激光光解产生的双环[2.2.2] octa-2,5 -diyl ()的三重态寿命。因此,它构成了第一个可以被捕获的局部双环三重态1,4-双自由基。尽管它的刚性,它拥有一个令人惊讶的短的寿命(3 τ约1纳秒)。