Synthesis,structure, and optical properties of CsU2(PO4)3 |
| |
Authors: | George N Oh Emilie Ringe Richard P Van Duyne James A Ibers |
| |
Institution: | Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA |
| |
Abstract: | CsU2(PO4)3 was synthesized in highest yield by the reaction in a fused-silica tube of U, P, and Se in a CsCl flux at 1273 K. It crystallizes with four formula units in space group P21/n of the monoclinic system in a new structure type. The structure of CsU2(PO4)3 is composed of U and Cs atoms coordinated by PO43? units in distorted octahedral arrangements. Each U atom corner shares with six PO43? units. Each Cs atom face shares with one, edge shares with two, and corner shares with three PO43? units. The structure shares some features with the sodium zirconium phosphate structure type. X-ray powder diffraction results demonstrate that the present CsU2(PO4)3 compound crystallizes in a structure different from the previously reported β′- and γ-CsU2(PO4)3 compounds. CsU2(PO4)3 is highly pleochroic, as demonstrated by single-crystal optical absorption measurements. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|