论文部分内容阅读
新矿物柴达木石(ZnFe(SO_4)_2(OH)·4H_2O)属三斜晶系,空间群P1.最小二乘法修正的晶胞参数:a=7.309(2) ,b=7.202(2) ,c=9.691(3) ,α=89.64(3)°,β=105.89(3)°,γ=91.11(2)°。晶体结构经Patterson法和Fourier合成法测定;2833个独立衍射全矩阵最小二乘修正,R因子为0.032。结构中,[Fe(1)O_5(OH)]和[Fe(2)O_5(OH)]两种配位八面体通过共用OH角顶,组成‘Z’字形链;链的这一侧和另一侧的4对八面体角顶被[SO_4]四面体共用。这种八面体-四面体链又被孤立的[Zn(1)O_2(H_2O)_4]和[Zn(2)O_2(H_2O)_4]八面体连接成平行(100)面的波状层;层间通过水分子以氢键相连。
The new mineral Chaidamu (ZnFe (SO 4) 2 (OH). 4H 2 O) belongs to the triclinic system with space group P1. The unit cell modified by the least square method is a = 7.309 (2), b = 7.202 c = 9.691 (3), α = 89.64 (3) °, β = 105.89 (3) °, γ = 91.11 (2) °. The crystal structure was determined by the method of Patterson and Fourier synthesis. The least squares correction of 2833 independent diffraction full matrices was performed, and the R factor was 0.032. In the structure, two kinds of coordination octahedra [Fe (1) O_5 (OH)] and [Fe (2) O_5 (OH) The four pairs of octahedral corners on one side are shared by the [SO_4] tetrahedron. This octahedron-tetrahedron chain is in turn connected to an undulating (100) wavy layer of [Zn (1) O_2 (H_2O) _4] and [Zn (2) O_2 (H_2O) By hydrogen molecules connected by hydrogen bonds.