-semiquinone complex; A Possible dielectric response mechanismMitsumi, Minoru*; Ezaki, Kazunari*; Komatsu, Yuki*; Toriumi, Koshiro*; Miyato, Tatsuya*; Mizuno, Motohiro*; Azuma, Nobuaki*; Miyazaki, Yuji*; Nakano, Motohiro*; Kitagawa, Yasutaka*; Hanashima, Takayasu*; Kiyanagi, Ryoji 
; Ohara, Takashi 
; Nakasuji, Kazuhiro*
A newly synthesized one-dimensional (1D) hydrogen-bonded (H-bonded) rhodium(II)--semiquinone complex, [Cp
Rh(-
-HSQ-Me
)]PF
exhibits a paraelectric-;antiferroelectric second-order phase transition at 237.1 K. Neutron and X-ray crystal structure analyses reveal that the H-bonded proton is disordered over two sites in the room-temperature (RT) phase. The phase transition would arise from this proton disorder together with rotation or libration of the Cp ring and PF ion. The relative permittivity 
' along the H-bonded chains reaches relatively high values (ca., 130) in the RT phase.
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: | 21 |
Number |
: | 27 |
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: | p.9682 - 9696 |
Publication Year/Month |
: | 2015/06 |
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Percentile:25.07 Category:Chemistry, Multidisciplinary |
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