Controlling the Electronic States and Physical Properties of MMX-Type Diplatinum-Iodide Chain Complexes via Binary Countercations
作者:Hiroaki Iguchi、Shinya Takaishi、Brian K. Breedlove、Masahiro Yamashita、Hiroyuki Matsuzaki、Hiroshi Okamoto
DOI:10.1021/ic301469u
日期:2012.9.17
MMX-type quasi-one-dimensional iodide-bridged dinuclear Pt complexes (MMX chains) with binary countercations show a new alternating charge-polarization + charge-density-wave (ACP+CDW) electronic state and reversibleswitching of the electronicstates and physical properties upon dehydration and rehydration process. By comparing several MMX chains with various binary countercations with previous chains
environmental remediation is an increasing demand, and photocatalysts based on semiconductors have gained considerable attention due to their superior stability and activity. In the current study, novel Rb2HgI4 nanostructures were prepared via a simple, low-cost, and low-temperature solid-state method. The effects of different parameters such as type of surfactants, reaction temperature, and reaction
sulfato complexes of the composition [Co(NH 3 ) 6 ](M I ) 3 [Ln(SO 4 ) 3 ] 2 · n H 2 O, where M I = NH 4 ( n = 3) or Rb ( n = 2) and Ln = La, Ce or Pr, has been studied using a DTA-TG apparatus. When the complexes were heated from room temperature to 600 °C, dehydration occurred at about 215 °C followed at about 320 °C, by decomposition in which the constituent [Co(NH 3 ) 6 ] took part. Unusually, in an atmosphere
摘要 [Co(NH 3 ) 6 ](MI ) 3 [Ln(SO 4 ) 3 ] 2 · n H 2 O 的三价镧系元素硫酸根合配合物的热分解,其中 MI = NH 4 ( n = 3) 或已经使用 DTA-TG 设备研究了 Rb (n = 2) 和 Ln = La、Ce 或 Pr。当复合物从室温加热到 600°C 时,在约 215°C 发生脱水,然后在约 320°C 发生脱水,其中组分 [Co(NH 3 ) 6 ] 参与分解。不同寻常的是,在空气气氛中,后一步是放热的,释放的 NN 3 少于总氨的 1%,而在 Ar 气氛中,它是吸热的,以 NH 3 的形式放出 70%。
Rb<sub>3</sub>In(SO<sub>4</sub>)<sub>3</sub>: a defluorinated mixed main-group metal sulfate for ultraviolet transparent nonlinear optical materials with a large optical band gap
作者:Qinke Xu、Xingxing Jiang、Chao Wu、Lin Lin、Zhipeng Huang、Zheshuai Lin、Mark G. Humphrey、Chi Zhang
DOI:10.1039/d1tc00383f
日期:——
An ultraviolet transparent nonlinear optical material Rb3In(SO4)3, which possesses a moderate SHG response and a large band gap, has been rationally designed through a defluorinated aliovalent substitution strategy.
Studies on synthetic galloalunites AGa3(SO4)2(OH)6: Synthesis, thermal analysis, and X-ray characterization
作者:Wolfram W. Rudolph、Peer Schmidt
DOI:10.1016/j.tca.2011.04.013
日期:2011.7
Abstract Stoichiometric end member galloalunites of the general formula AGa3(SO4)2(OH)6, with A = Na+, K+, Rb+, H3O+, and NH4+ have been synthesized under hydrothermal conditions. These galloalunites were characterized by chemical methods, thermal analysis (DSC, TG coupled with mass spectroscopy), and powder X-ray diffraction (XRD). The stages of thermal decomposition of sodium, potassium and rubidium
摘要 在水热条件下合成了通式为 AGa3(SO4)2(OH)6 的化学计量端元镓铝石,其中 A = Na+、K+、Rb+、H3O+ 和 NH4+。这些镓铝石通过化学方法、热分析(DSC、TG 与质谱联用)和粉末 X 射线衍射 (XRD) 进行表征。钠、钾和铷镓铝石的热分解阶段显示出形成 β-Ga2O3 和 A2SO4(A = Na+、K+ 和 Rb+)的共同分解机制,而铵和铷镓铝石在形成纯 β-Ga2O3 的情况下分解。热重结果证实了镓铝石的分析结果,从而验证了这些合成产物的化学计量。在 A 位点具有不同单价阳离子(即 Na+、K+、Rb+、H3O+ 和 NH4+) 在菱形空间群 R 3 ¯ m (#166) 中结晶。取代对晶胞参数的影响根据镓铝石的结构排列合理化。晶胞参数 c 随着 A 位点中阳离子的有效离子半径的增加而增加,而参数 a 的变化程度要小得多。