Electronic and Molecular Structure of the C<sub>8</sub>H 10+· Valence Isomers 1,3,5-Cyclooctatriene<sup>+·</sup>and Bicyclo[4.2.0]octa-2,4-diene<sup>+·</sup>from their Electronic absorption Spectra in<i>Freon</i>
作者:Thomas Bally、Kuno Roth、Rolf Straub
DOI:10.1002/hlca.19890720110
日期:1989.2.1
The molecular cations of 1,3,5-cyclooctatriene (COT+·) and bicyclo[4.2.0]octa-2,4-diene (BCO+·) can be observed intact in γ-irradiated Freon glasses, as opposed to Ar matrices where ionization is accompanied by extensive rearrangements. This proves the superiority of the Freon-glass method for the generation of metastable primary cations. The electronic absorption (EA) spectra reveal a) that a previous
与Ar相比,可以在γ辐照的氟利昂玻璃中完整地观察到1,3,5-环辛三烯(COT +·)和双环[4.2.0] octa-2,4-二烯(BCO +·)的分子阳离子电离伴随着大量重排的基质。这证明了氟利昂玻璃法在生成亚稳态伯阳离子方面的优越性。电子吸收(EA)光谱显示:a)先前基于紫外光电子对BCO +·电子结构的分析(UP(BCO光谱不完整,b)根据定性预期和MNDO计算,COT在电离时会经历平面化。使用先前提出的LCBO模型来评估上述几何变化对COT +·的电子结构的影响。