Electric and magnetic properties of a neutral radical, 2-cyano-10-methyl-5-phenazinyl.
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概要
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The temperature dependence of electric conductivity, static magnetic susceptibility and ESR absorption, and electronic absorption spectra at room temperature have been measured on an organic neutral radical, 2-cyano-10-methyl-5-phenazinyl (NMPN). NMPN is found to be more conductive than the neutral radicals studied previously. The room temperature conductivity of powder NMPN is of the order of 10<SUP>−7</SUP> Ω<SUP>−1</SUP> cm<SUP>−1</SUP> and the activation energy is 0.36 eV. The absorption spectra and the magnetic susceptibility measurements indicate that the NMPN molecules form pairing array with considerably large interpair interaction in the solid state. The absence of the triplet fine structure in the ESR spectrum also suggests the existence of the interpair interaction. From these, the magnetic behavior of NMPN is interpreted in terms of the alternating antiferromagnetic Heisenberg model with temperature dependent alternation.
- 公益社団法人 日本化学会の論文
著者
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Kinoshita Minoru
The Institute For Solid State Physics The University Of Tokyo
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Sugano Tadashi
The Institute for Solid State Physics, The University of Tokyo
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Awaga Kunio
The Institute for Solid State Physics, The University of Tokyo
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