Polymorphism of H<sub>2</sub>SeO<sub>3</sub>, NaHSeO<sub>4</sub>and Na<sub>5</sub>H<sub>3</sub>(SeO<sub>4</sub>)<sub>4</sub>(H<sub>2</sub>O)<sub>2</sub>, and Re-refinement of the Crystal Structure of Te<sub>2</sub>O<sub>4</sub>(OH)<sub>2</sub>
作者:Stephan Pollitt、Matthias Weil
DOI:10.1002/zaac.201400068
日期:2014.7
of the compounds H2SeO3, NaHSeO4, and Na5H3(SeO4)4(H2O)2 were isolated from aqueous solutions and their crystal structures determined from single crystal data. β-H2SeO3 crystallizes in the space group P1 with lattice parameters of a = 4.6794(4) A, b = 5.0988(4) A, c = 5.7743(5) A, α = 102.252(6)°, β = 91.594(6)°, γ = 98.054(6)°, and consists of two unique trigonal-pyramidal SeO(OH)2 units that are held
从水溶液中分离出化合物 H2SeO3、NaHSeO4 和 Na5H3(SeO4)4(H2O)2 的新变体(表示为 β-),并根据单晶数据确定了它们的晶体结构。β-H2SeO3 在空间群 P1 中结晶,晶格参数为 a = 4.6794(4) A, b = 5.0988(4) A, c = 5.7743(5) A, α = 102.252(6)°, β = 91.594(6) )°, γ = 98.054(6)°,由两个独特的三角锥 SeO(OH)2 单元组成,这些单元由 O-H···O 氢键结合在一起。β-NaHSeO4 在空间群 P 中结晶,晶格参数为 a = 5.0814(2) A, b = 5.6345(3) A, c = 6.5125(3) A, α = 88.352(3)°, β = 73.163(3) )°, γ = 82.027(3)°,由扭曲的 NaO6 八面体和四面体 SeO3(OH)–