A Mixed-Valence Coordination Polymer Featuring Two-Dimensional Ferroelectric Order: {[CuI4CuII(Et2dtc)2Cl3][CuII(Et2dtc)2]2(FeCl4)}n (Et2dtc- = diethyldithiocarbamate)

作者：Takashi Okubo, Ryo Kawajiri, Tadaoki Mitani, Tatsuya Shimoda · 发表于：Journal of the American Chemical Society · 年份：2005 · DOI：10.1021/ja056030p · 被引用次数：124 · 研究领域：Metal-Organic Frameworks: Synthesis and Applications、Crystal structures of chemical compounds、Magnetism in coordination complexes

The first mixed-valence coordination polymer indicating ferroelectric properties, {[CuI4CuII(Et2dtc)2Cl3][CuII(Et2dtc)2]2(FeCl4)}n (Et2dtc- = diethyldithiocarbamate), has been synthesized and crystallographically characterized. This complex has a two-dimensional infinite square lattice structure, including both Cu(I) and Cu(II) ions, which is confirmed by XPS and SQUID measurements. In addition, the ferroelectric behaviors are revealed by the dielectric measurements with a LCR meter and a ferroelectric tester.