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The allyl radical was produced in molecular beam by pyrolysis of allyl iodide. The vi-bronic spectra from ground state to six new electronic states of the allyl radical at 6-8 eV, π→3dxz, π→3dxy, and π→ns (n=4, 6, 7, 8) were observed firstly with the aid of time-of-flight mass spectros-copy and resonance-enhanced multiphoton ionization technique. Vibrational progression of v7 (C3 bend) with gross spacing of about 430 cm-1 was observed in ns Rydberg states. The adiabatic ionization potential of the allyl radical was obtained to be (65641 ± 20) cm-1 ((8.138± 0.002) eV) by fitting the term values of ns (n=4,6,7,8) Rydberg states with Rydberg formula. 相似文献
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在分子束中用高温热解3-碘代丙烯的方法产生烯丙基,并结合飞行时间质谱和2+1共振增强多光子电离技术,从实验上观测到了烯丙基从基态到6~8eV之间的6个电子态3dxz, 3dxy,ns(n=4,6,7,8)的电子振动光谱.在ns的Rydberg态电子振动光谱中可以观测到v7(∠CCC弯曲振动)约为430cm-1的振动级数.由Rydberg公式拟合得到烯丙基的绝热电离能为(65641±20)cm-1((8.138±0.002)eV). 相似文献
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