The Magnetic Properties of Verdazyl Free Radicals. IX. The Crystal Structure of 1,3,5-Triphenyl-6-methylverdazyl Radical

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概要

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• The crystal structure of 1,3,5-triphenyl-6-methylverdazyl has been determined by X-ray diffraction. The crystals are orthorhombic, with the space group of Pnma and with <I>a</I>=18.25(1), <I>b</I>=16.65(1), <I>c</I>=5.776(2) Å, and <I>Z</I>=4. The structure was deduced from the sharpened Patterson synthesis and was refined by the block-diagonal least-squares method to the final <I>R</I> value of 0.055 for 960 non-zero reflections collected on an automated four-circle diffractometer. The <I>sym</I>-tetrazinyl ring has an asymmetrical boat form, as has been observed in both 1,3,5-triphenylverdazyl and 1,3,5-tri-<I>p</I>-tolylverdazyl. The complete intermolecular overlap was observed in a tilted face-to-face array along the c-axis; this accounts for a fairly strong antiferromagnetic exchange interaction between the unpaired electrons.

• 公益社団法人 日本化学会の論文

著者

• Azuma Nagao

  Department Of Chemistry Faculty Of Science Ehime University

• Marumo Fumiyuki

  Department F Geosystem Sciences Nihon University

• Deguchi Yasuo

  Department Of Chemistry Faculty Of Science Kyoto University

• Saito Yoshihiko

  The Institute for Solid State Physics The University of Tokyo

• Marumo Fumiyuki

  Department of Chemistry, Faculty of Science, Kyoto University

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