Perylene and its monoperchlorates: conductivities of compounds and mixtures

Abstract

The ionic perylenium perchlorate is prepared, electrolytically, for the first time. It has a needle-axis conductivity σ of 0.1 Ω^–1 cm^–1 and compacted discs showing 0.0075 Ω^–1 cm^–1. Compacted (covalent) perchloratoperylene has σ 1.6 × 1 0^–4Ω^–1 cm^–1 but compressed-powder mixtures with the ionic species show a maximum σ at 1 : 1 composition, with σ enhanced to 0.1 Ω^–1 cm^–1. The bisperylene perchlorate gives 1 0⁷σ/Ω^–1 cm^–1 1.6 (needle axis) and 500 (transverse), cf. 1.7 (compressed powder); admixtures with perylenium perchlorate are studied. The electrocrystallisation processes yielding the radical salts are examined.