Reversible ferroelastic phase transition of N-chloromethyl-1,4-diazabicyclo[2.2.2]octonium trichlorobromoaquo copper(II)
作者:Li-Zhuang Chen、Deng-Deng Huang、Jia-Zhen Ge、Qi-Jian Pan
DOI:10.1016/j.inoche.2014.03.037
日期:2014.7
with the space group of Pnma (a = 17.790(2) A, b = 9.0000(12) A, c = 8.2263(11)A, V = 1317.1(3) A3 and Z = 1) to a low-temperature one with the space group of P21/n (a = 8.184(4) A, b = 17.681(8) A, c = 8.941(4) A, β = 91.218(6)°, V = 1293.5(10) A3 and Z = 1). Symmetry breaking occurred with the Aizu notation of mmmF2/m. The ordering of twisting motions of 1,4-diazoniabicylo[2,2,2]octane ring may drive
摘要 一种新型单核金属有机化合物,N-氯甲基-1,4-二氮杂双环-[2.2.2]辛三氯溴水铜(II)、Cu(LCH2Cl) (H2O) Br2.75Cl0.25 (1) (L + CH2Cl = N-氯甲基-1,4-二氮杂双环[2.2.2]辛鎓离子)被合成。差示扫描量热法 (DSC) 结果表明,该化合物在约 10 小时经历了可逆相变。190 K 具有 11 K 宽度的滞后和单晶 X 射线衍射数据表明存在从具有 Pnma 空间群的室温相转变 (a = 17.790(2) A, b = 9.0000(12) A, c = 8.2263(11)A, V = 1317.1(3) A3 and Z = 1) 到空间群为 P21/n (a = 8.184(4) A, b = 17.681(8) ) A, c = 8.941(4) A, β = 91.218(6)°, V = 1293.5(10) A3