Abstract
A study has been made of the changes in the infrared and nuclear magnetic resonance (n.m.r.) spectra of cyclopentene, cyclohexene, cycloheptene, and cis-cyclooctene, and of their 1-methyl-substituted analogues upon formation of the silver tetrafluoroborate complexes, AgBF4•2olefin. Based on the perturbation of the double bond stretching frequency in the olefin, the order of decreasing strength of the silver ion – olefin interaction is cyclopentene > cyclohexene > cis-cyclooctene ≈ cycloheptene.
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