Pb<sub>2</sub>PdO<sub>2</sub>(OH)<sub>2</sub>and Pb<sub>2</sub>PdO(OH)<sub>4</sub>(H<sub>2</sub>O): Synthesis and Crystal Growth at Ambient Conditions
作者:Alexander Christoph Komarek、Patrick Merz、Hanjie Guo、Emmanuelle Suard、Jin-Ming Chen、Claudia Felser、Martin Jansen
DOI:10.1002/zaac.201500217
日期:2015.7
symmetry [Pb2PdO2(OH)2: a = 5.9512(3) A, b = 5.9479(3) A, c = 7.9480(2) A, α = 90.256(4)°, β = 90.392(4)°, γ = 119.694(1)°; Pb2PdO(OH)4(H2O): a = 10.706(2) A, b = 10.32(1) A, c = 5.7813(3) A, α = β = γ = 90°] required to employ high resolution synchrotron powder diffraction data. The combined use of neutron and X-ray diffraction measurement has enabled solving the crystal structure of Pb2PdO2(OH)2 including
新的 Pb2PdO2(OH)2 和 Pb2PdO(OH)4(H2O) 是在环境条件下由高纯度和粗晶体的 KOH 碱性和金属硝酸盐水溶液原料合成的。通过结合粉末中子和单晶 X 射线衍射研究确定了两种钯酸铅的组成。两种晶体结构都表现出明显的伪对称性,并确定了真正的晶格对称性 [Pb2PdO2(OH)2: a = 5.9512(3) A, b = 5.9479(3) A, c = 7.9480(2) A, α = 90.256( 4)°,β = 90.392(4)°,γ = 119.694(1)°;Pb2PdO(OH)4(H2O): a = 10.706(2) A, b = 10.32(1) A, c = 5.7813(3) A, α = β = γ = 90°] 需要采用高分辨率同步加速器粉末衍射数据。中子和 X 射线衍射测量的结合使用能够解决 Pb2PdO2(OH)2 的晶体结构,包括氢位置。对于