Crystal structure, phase transition and conductivity study of two new organic – inorganic hybrids: [(CH2)7(NH3)2]X2, X = Cl/Br
作者:Mohga Farid Mostafa、Shimaa Said El-khiyami、Seham Kamal Abd-Elal
DOI:10.1016/j.molstruc.2016.07.025
日期:2017.1
(5) A, c = 13.9281 (5) A, β = 97.793 (2)°, V = 1203.83(6) A 3 , D = 1.612 g/cm 3 , λ = 0.71073 A, R = 0.03 for 1959 reflections with I > 2σ(I) T = 298(2) K. Asymmetric unit cell of [(C 7 H 20 N 2 ]X 2 ,X = Cl/Br, each consist of one heptane-1,7-diammonium cation and two halide anions. The organic hydrocarbon layers pack in a stacked herring-bone manner, hydrogen bonded to the halide ions. Lattice potential
氯化物和溴化物的阳离子摩尔体积分别为0.295 nm 3 和0.300 nm 3 。DTA 证实了 T ∼ 340 K 以下两种杂化物的链熔化转变。介电和交流电导率测量(290 340 K。观察到来自 Jonscher 在低温 T 340 K 下的通用介电响应的交叉。在高温下,卤化物离子跳跃符合跳跃松弛模型占上风。