the experiments. For the unsubstituted pentadiynylidene (R1 = R2 = H) the recorded spectrum yields an adiabatic ionization energy (IEad) of 8.36 ± 0.03 eV. In addition, a second carbene isomer, 3-(didehydrovinylidene)cyclopropene, with a singlet electronic ground state, was identified in the spectrum based on the IEad of 8.60 ± 0.03 eV and Franck–Condon simulations. We found that multireference computations
气相中的质量选择阈值光电子能谱用于表征二炔基三重态碳
戊二烯戊二炔(HC 5 H),甲基戊二炔(MeC 5 H)和二甲基戊二炔(MeC 5 Me)。重氮化合物被用作前体通过闪速热解生成羧甲基。在光电子光子重合(PE
PICO)实验中,通过真空紫外(VUV)同步辐射将R 1 -C 5 -R 2碳链光电离。进行了从头算起的高级计算,以支持对实验的解释。对于未取代的戊二炔(R 1 = R 2= H)记录的光谱产生的绝热电离能(IE ad)为8.36±0.03 eV。此外,根据8.60±0.03 eV的IE ad和Franck-Condon模拟,在光谱中鉴定出第二个卡宾异构体3-(二氢亚
乙烯基)环
丙烯,具有单重电子基态。我们发现需要多参考计算才能可靠地计算该分子的IE广告。CA
SPT2计算可预测IE广告= 8.55 eV,而耦合群集计算大大高估了IE。环状异构体很可能由样品中存在的前体的另一种异构体形