THE CHLORIDES NA3XM2-XCL6 (M=LA-SM) AND NAM2CL6 (M=ND, SM) - DERIVATIVES OF THE UCL3-TYPE OF STRUCTURE - SYNTHESIS, CRYSTAL-STRUCTURE AND X-RAY-ABSORPTION SPECTROSCOPY (XANES)

被引：38

作者：

LISSNER, F

KRAMER, K

SCHLEID, T

MEYER, G

HU, ZW

KAINDL, G

机构：

[1] UNIV HANNOVER,INST ANORGAN CHEM,CALLINSTR 9,D-30167 HANNOVER,GERMANY

[2] UNIV BERN,INST ANORGAN ANALYT & PHYS CHEM,FREIESTR 3,CH-9000 BERN,SWITZERLAND

[3] FREIEN UNIV BERLIN,INST EXPTL PHYS,ARNIMALLEE 14,D-14195 BERLIN,GERMANY

来源：

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

关键词：

CHLORIDES; LANTHANIDES; SYNTHESIS; CRYSTAL STRUCTURE; X-RAY ABSORPTION SPECTROSCOPY;

D O I：

10.1002/zaac.19946200307

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Single crystals of the derivatives of the UCl3-type structure Na3xM2-xCl6 (M = La/x = 0.364(4); Ce/0.349(5); Pr/0.318(8); Nd/0.305(5); Sm/0.246(4)) and NaSm2Cl6 were grown by different methods generally under reducing conditions. They are addition [Na(Sm2)Cl6] and addition/substitution variants [Na2x(NaxM2-x)Cl6] of the UCl3 structure type [square(U2)Cl6]. X-Ray Absorption Spectroscopy (XANES) at the L(III) edge characterizes NaSm2Cl65 and NaNd2Cl6 as mixed-valence compounds with valences of +2 and +3 in statistical distribution (approximately 1 : 1) for Sm and Nd, respectively.

引用

页码：444 / 450

页数：7

共 43 条

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