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Updated: Jun 1, 2026

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
Published on: April 19, 2019
Dimeric and trimeric tetrathiafulvalenes with strong intramolecular interactions in the oxidized states
Ken-ichi Nakamura1, Tsuyoshi Takashima, Takashi Shirahata
1Department of Applied Chemistry, Graduate School of Engineering, Ehime University , Matsuyama, Ehime 790-8577, Japan.
Abstract:
New dimeric and trimeric TTF derivatives with methylenedithio spacers (1a,b, 2a, and 2b) have been synthesized. X-ray structure analysis revealed that TTF units of the dimer 1b adopted distorted face-to-face overlapping arrangement both in intra- and intermolecular stacking. Cyclic voltammetric study indicated that trimeric 2a was in favor of taking di- and tetracationic states, while the dimeric 1a was in favor of taking a monocation. The absorption spectroscopic study suggested an existence of the strong face-to-face interaction particularly in di-, tri-, and tetracationic state of the trimeric TTF derivatives.
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