Orthorhombic HP-PrO2 - High-Pressure Synthesis and Crystal Structure

被引：4
|
作者：
Haberer, Almut [1 ]
Huppertz, Hubert [1 ]
机构：
[1] Univ Innsbruck, Inst Allgemeine Anorgan & Theoret Chem, A-6020 Innsbruck, Austria
来源：
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2010年 / 636卷 / 02期
关键词：
Praseodymium oxide; High-pressure; Solid-state structures; Rare Earths; Synthetic methods; INDUCED PHASE-TRANSFORMATION; X-RAY-DIFFRACTION; ELECTRONIC-STRUCTURE; FLUORITE STRUCTURE; PRO2; CEO2; CERIUM; STATE; GPA;
D O I：
10.1002/zaac.200900441
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The high-pressure phase of PrO2 was synthesized under conditions of 5.5 GPa and 1000 degrees C in a Walker-type multianvil apparatus. The Crystal structure was determined oil the basis of single-crystal Xray diffraction data Collected at room temperature. The title compound crystallizes in the orthorhombic alpha-PbCl2-type structure with the lattice parameters a = 637.6(3) pm, b = 384.4(2) pm, and c = 703.1(3) pm. The praseodymium ion is ninefold Coordinated, the oxygen ions show either tetrahedral or square-pyramidal coordination spheres.
引用
收藏
页码：363 / 367
页数：5
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