SYNTHESIS, CRYSTAL-STRUCTURE AND PROPERTIES OF [SR2CU(C2O4)(3)(H2O)(7)] - PRECURSOR OF SR2CUO3 OXIDE

被引：7

作者：

INSAUSTI, M ^{[1
]}

URTIAGA, MK ^{[1
]}

CORTES, R ^{[1
]}

MESA, JL ^{[1
]}

ARRIORTUA, MI ^{[1
]}

ROJO, T ^{[1
]}

机构：

[1] UNIV BASQUE COUNTRY, ISEM, DEPT MINERAL PETROL, E-48080 BILBAO, SPAIN

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1994年 / 4卷 / 12期

关键词：

D O I：

10.1039/jm9940401867

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

[Sr2Cu(C2O4)(3)(H2O)(7)] (C2O42- = oxalate ion) has been synthesized and characterized. The structure has been determined by X-ray diffraction methods. It crystallizes in the triclinic system, space group P ($) over bar 1 with a=6.349(2) Angstrom, b=10.258(2) Angstrom, c=15.737(2) Angstrom, alpha=73.21(1)degrees, beta=93.66(2)degrees, gamma=76.44(2)degrees, V=944.3(4)Angstrom(3), Z=2. The structure consists of an intricate network of Sr2+ and Cu2+ ions linked by oxalate and H2O groups. A nonacoordinated arrangement around the two strontium ions and a distorted octahedral geometry for the copper(ll) ions are observed. The thermal decomposition of this complex yields a unique and homogeneous phase at comparatively short reaction times and tower temperatures than the ceramic method. Conductivity measurements of the oxide obtained show semiconductor behaviour.

引用

页码：1867 / 1870

页数：4

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