Title

Simultaneous Electron Transfer from Free and Intercalated 4-benzoylpyridinium Cations in Cucurbit[7]uril

Abstract

N-Substituted 4-benzoylpyridinium monocations form stable host−guest complexes with cucurbit[7]uril (CB[7]) in DMSO (Keq ≈ 0.6−1.9 × 103 M−1). Observation of simultaneous reversible and quasi-reversible e-transfer processes from the free and intercalated quests, respectively, is attributed to the pre-e-transfer host−guest equilibrium. The standard rate constant for Me-BP@CB[7] (ks = 1.0 × 10−4 cm·s−1) reflects e-transfer across 5.7 Å, corresponding to the distance of the intercalated guest from the outmost perimeter of CB[7] (5.3 Å).

Department(s)

Chemistry

Sponsor(s)

University of Missouri Research Board

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2009 American Chemical Society (ACS), All rights reserved.


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