Ce2Pt8P: A Phosphido-platinide with Covalently Bonded Framework Polyanion

被引：5

作者：

Chizhov, Pavel S. ^{[1
,2
]}

Prots, Yurii ^{[1
]}

Antipov, Evgeny V. ^{[2
]}

Grin, Yuri ^{[1
]}

机构：

[1] Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany

[2] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2009年 / 635卷 / 12期

基金：

俄罗斯基础研究基金会;

关键词：

Chemical bonding; Intermetallic compounds; X-ray diffraction; Cerium; Phosphorus; CRYSTAL-STRUCTURE; ELECTRON LOCALIZABILITY; CSAU;

D O I：

10.1002/zaac.200900252

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The cerium phosphido-platinide Ce2Pt8P is synthesized by direct reaction of the elements. The crystal structure is considered as an intergrowth of structural segments with the compositions CePt5 (CaCu5-like) and CePt3P (CePt3B-like) along [010]. The Pt-Pt and Pt-P distances in the anionic framework are close to the ones found in CePt5 and CePt4P2. Analysis of the chemical bonding in real space reveals the presence of a Pt-P covalently-bonded polyanion [Pt8P] (consisting of PtPt6 trigonal prisms and PPt5 tetragonal pyramids). Cerium cations are located in the voids of the polyanionic framework. Together with CePt5 (m = 0, m = 1), Ce2Pt8P (m = 1, m = 1) forms a homological series Cen+mPt5n+3(m)P(m). The hypothetical "CePt3P" (m = 1, n = 0) with CePt3B-type crystal structure is not known to date.

引用

页码：1863 / 1868

页数：6

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