Formula: Br2CuIn 2019 ,《A semiconducting organic-inorganic hybrid ([BrCH2CH2N(CH3)3]2+[CuBr4]2-) with switchable dielectric properties derived from an unusual piston-like displacive movement》 was published in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices. The article was written by Sui, Yan; Zhong, Ye-Shun; Wang, Jing-Jing; Xia, Qin; Wang, Liang-Jun; Liu, Dong-Sheng. The article contains the following contents:
According to quasi-spherical theory, structural modifications of spherical organic components are useful in obtaining ferroelec. or switchable dielec. organic-inorganic hybrid compounds, but how to tailor the spherical organic components is still unclear. In the current work, a prototype spherical Me4N+ cation was modified by replacing one of its H atoms with a CH2Br group, rather than with the widely studied Br atom, to obtain a new organic-inorganic hybrid compound, [BrCH2CH2NMe3]2+[CuBr4]2- (BETABCuBr). The structure, phase transition, and dielec. and optical properties of BETABCuBr were carefully characterized. Based on these results, BETABCuBr was indicated to undergo a reversible phase transition at ∼356 K, mainly due to a piston-like displacive movement of its Cu atom. The extension of the C chain was concluded to lead to a change of the phase transition mechanism from the typical order-disorder movement to an unusual displacive movement. The authors expect the results of this work to contribute to the exploration of new types of phase transition materials. After reading the article, we found that the author used Cupric bromide(cas: 7789-45-9Formula: Br2Cu)
Some reported applications of Cupric bromide(cas: 7789-45-9) are: catalyst in cross coupling reactions; co-catalyst in Sonogashira coupling; lewis acid in enantioselective addition of alkynes.Formula: Br2Cu
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”