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Updated: May 28, 2025

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Diruthenium(II,II) Complex Assemblies Showing Electrical Conduction via π-Stacked 2-Pyrenecarboxylate Moiety
Ren Takaki1, Hiroaki Iguchi1, Liyuan Qu1
1Department of Chemistry and Biotechnology, School of Engineering, Department of Materials Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan.
Abstract:
Through-space electrical conduction in paddlewheel-type homovalent dinuclear complexes remains poorly understood, despite the numerous reports on these complexes. Herein, the electrical conduction of new Ru2(II,II) complexes with 2-pyrenecarboxylate (pyrCOO-) ligands, [Ru2(pyrCOO)4X2] ⋅ n(X) (where X=DMF (Ru-DMF), NMP (Ru-NMP), DMA (Ru-DMA)), was investigated. The dimensionality of π-stacking interactions between discrete molecules in Ru-DMA is higher (two-dimensional) than in Ru-DMF and Ru-NMP (stair-like one-dimensional). Nevertheless, Ru-DMF, which contains a slight amount of organic radicals, exhibited the highest electrical conductivity. This suggests that the large overlap and high dimensionality of π-stacking interactions among the complexes, along with a slight organic radical impurity, contribute to the increased electrical conductivity.
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