SYNTHESIS, STRUCTURES AND LUMINESCENCE OF 2 NEW EUROPIUM(II) SILICATE-CHLORIDES, EU2SIO3CL2 AND EU5SIO4CL6

被引：19

作者：

JACOBSEN, H ^{[1
]}

MEYER, G ^{[1
]}

SCHIPPER, W ^{[1
]}

BLASSE, G ^{[1
]}

机构：

[1] UNIV UTRECHT,DEBYE INST,UTRECHT,NETHERLANDS

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1994年 / 620卷 / 03期

关键词：

SILICATES; CRYSTAL STRUCTURE; EUROPIUM; LUMINESCENCE;

D O I：

10.1002/zaac.19946200308

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Eu2SiO3Cl2 and Eu5SiO4Cl6 were prepared by reaction of EuCl2 with EuSiO3 and Eu2SiO4, respectively, Sr2SiO3Cl2:Eu2+ from mixtures of SrCO3, Eu2O3, SrCl2 . 6H2O and SiO2 under reducing conditions. The crystal structures of Eu2SiO3Cl2 [a = 1118.7(5), c = 952.6(1) pm, tetragonal, I4/m, Z = 8, R = 3.3, R(w) = 3.0%] and Eu5SiO4Cl6 [a = 900.4(1), b = 1401.7(2), c = 1112.3(2) pm, beta = 103.51(1)degrees, monoclinic, C2/c, Z = 4, R = 3.6, R, = 2.6%] were determined from four-circle diffractometer data and compared with related compounds. The luminescence properties were investigated at 300 K and at 4.2 K; all compounds show intense bluish-green photoluminescence. Sr2SiO3Cl2:Eu2+ shows thermoluminescence.

引用

页码：451 / 456

页数：6

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