Abstract
Abstract The anion radical salts derived from 3,5,3′,5′-tetrachloro-4,4′-diphenoquinone and 3,5,3′,5′-tetrabromo-4,4′-diphenoquinone were prepared. The absorption spectra in solution and the solid-state spectra were examined in order to study the solid-state properties characteristic of the anion radical salts. The measurements of the static magnetic susceptibilities and the electrical resistivities were also useful for this purpose. These physical properties were found to be based on the charge-transfer interaction between the anion radical molecules. It was suggested that, in these solid anion radical salts, the anion radical molecules might be stacked by a unique face-to-face arrangement in groups of two or an infinite number of molecular systems.
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