Die Kristallstruktur von monoklinem Siliziumphosphat SiP2O7AIII: eine Phase mit [Si06]‐Oktaedern
Die Kristallstruktur von monoklinem Siliziumphosphat SiP2O7AIII: eine Phase mit [Si06]‐Oktaedern
复制标题
单晶硅磷酸盐 SiP2O7AIII 的晶体结构:[Si06]-Oktaedern 的单相
DOI:
10.1107/s0567740870002200
复制
发表时间:
1970
期刊:
影响因子:
--
通讯作者:
F. Liebau
中科院分区:
文献类型:
--
作者:
G. Bissert;F. Liebau
SiP207 (AIII modification) crystallizes in space group P21/c with four formula units in the cell with the dimensions a= 4.73, b= 6.33, c= 14.71/~,//= 90.1. The crystal structure has been determined by three-dimensional X-ray analysis, the final R index being 0.07. Two POa-tetrahedra are linked almost symmetrically (plane of symmetry) forming a staggered P207 group with a POP angle of 139-2. The averaged PO bond lengths to the bridge oxygen atom and to the terminal oxygen atoms are 1.589 and 1.506/~ respectively. The average Si-O distance of a slightly deformed SiO6-tetrahedron is 1.763/~.