Transannulare Wechselwirkungen zwischen Acetylenen – Photoelektronenspektroskopische Untersuchungen an 1,8-Diethinylnaphthalin und cyclischen Derivaten von 2,2′-Diethinylbiphenyl

作者: Rolf Gleiter , Wolfgang Schäfer , Mirjana Eckert-Maksić

DOI: 10.1002/CBER.19811140627

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摘要: Die He(I)-Photoelektronen (PE)-Spektren von 1,8-Diethinylnaphthalin (3), 2,2′-Diethinylbiphenyl (6), der cyclischen Derivate 6 (4 und 5) sowie 1-Ethinyl-, 2-Ethinyl-, 1,5-Diethinyl-, 1-Vinyl- 1,8-Divinylnaphthalin wurden durch Korrelation bzw. semiempirische MO-Rechnungen interpretiert. Bei 3 wurde das Resonanzintegral β fur die transannulare Wechselwirkung zu −0.48 eV ermittelt, bei 4,5 ist wegen starken zwischen Biphenylteil Acetyleneinheiten eine Ermittlung nicht moglich. Transannular Interactions Between Acetylenes – Photoelectron Spectroscopic Investigations on 1,8-Diethynylnaphthalene and Cyclic Derivatives of 2,2′-Diethynylbiphenyl The He(I) photoelectron (PE) spectra 1,8-diethynylnaphthalene 2,2′-diethynylbiphenyl (6) the cyclic derivatives as well 1-ethynyl-, 2-ethynyl-, 1,5-diethynyl-, 1-vinyl-, 1,8-divinylnaphthalene have been recorded. The first bands in PE these compounds can be assigned using correlation techniques semiempirical MO calculations. In case resonance integral for transannular interaction has found to = eV. For 4 5 evaluation was not possible due strong between biphenyl ethynyl units.

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