NMR Study on the Ru-dimer System with Valence Fluctuation

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• 作者：Yosuke Hosoya^a ; ^{yousuke0811@sophia.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Takayuki Goto^a ; Akira Endo^b ; Takeshi Hashimoto^b ; Takashi Hayashita^b ; Satoshi Iguchi^c ; Takahiko Sasaki^c
• 关键词：quantum spin dimer system ; NMR ; valence fluctuation
• 刊名：Physics Procedia
• 出版年：2015
• 出版时间：2015
• 年：2015
• 卷：75
• 期：Complete
• 页码：613-617
• 全文大小：198 K

文摘

Substituting effect of CF₃ to the Ru-based binuclear complex [{Ru^III(acac)₂}₂(μ-OEt)₂], in which S = 1/2 spin dimer takes the singlet ground state have been investigated by means of the magnetic susceptibility χ and the longitudinal nuclear spin relaxation rate T₁^-1 of ¹H/¹⁹F-NMR. In CF₃-substituted complex [{Ru^III(fhma)₂}₂(μ-OMe)₂], we have observed the prominent magnetic response both in χ and T₁⁻¹. This behavior is attributed to the slight change in the Ru valence state due to the substitution.