Journal of the American Chemical Society

Selenium-77 NMR. Observation of 3JSe-Se couplings allowing cis/trans isomer assignments in substituted tetraselenafulvalenes

I Johannsen, H Eggert

Index: Johannsen, Ib; Eggert, Hanne Journal of the American Chemical Society, 1984 , vol. 106, # 5 p. 1240 - 1243

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Citation Number: 41

Abstract

Abstract: 77Se chemical shifts and 1H-77Se and 77Se-77Se coupling constants Denmark, DK-2800 for a series of substituted tetraselenafulvalenes (TSFs). For mixtures of cis and trans isomers resolved signals for each isomer were observed at 21 kG. The &/trans assignments were obtained by measurement of the homonuclear 3J selenium-77 coupling constant. This coupling constant is related to dihedral bond angles; large coupling ...