کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1303788 | 1498958 | 2013 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Inorganic–organic hybrid compound with face-sharing iodoplumbate chains showing novel dielectric relaxation Inorganic–organic hybrid compound with face-sharing iodoplumbate chains showing novel dielectric relaxation](/preview/png/1303788.png)
• New one-dimensional iodoplumbate-based hybrid compound.
• Inorganic iodoplumbate chain consists of PbI6 octahedra via sharing I–I–I triangular faces.
• Dynamically dipole motion via polar group rotation.
• Dielectric relaxation in low-frequency and high-temperature regime.
An inorganic–organic hybrid compound, [4′-methyl-1-aminopyridinium][PbI3] (1), has been synthesized and characterized structurally. The hybrid crystal crystallizes in space group P21/c, in which the Pb2 + ion, surrounded by six iodides, adopts the distorted octahedral coordination geometry; the neighboring PbI6 octahedra form the face-sharing PbI6 octahedral chain and the organic cations are aligned into stack along c-axis direction. Hybrid compound shows normal dielectric constant (ε′ < 20) below 130 °C in the frequency range of 1–107 Hz, but higher dielectric constant above 160 °C, especially, in the low-frequency regime. In addition, a novel dielectric relaxation process was observed in the frequency regime f < 106 Hz, which exhibits the characteristic activated or Arrhenius behavior, such a dielectric relaxation process ARISES from the dynamically dipole motion of the 4′-methyl-1-aminopyridinium cations under ac electrical field.
An inorganic–organic hybrid compound, [4′-methyl-1-aminopyridinium][PbI3], in which crystal is built from PbI6 octahedral chains and cation stacks, shows novel thermally assisted dielectric relaxation behavior.Figure optionsDownload as PowerPoint slide
Journal: Inorganic Chemistry Communications - Volume 32, June 2013, Pages 18–21