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

页码：363 / 367

页数：5

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