Structural investigations of several LnVO(4) compounds

被引：88

作者：

Mullica, DF ^{[1
]}

Sappenfield, EL ^{[1
]}

Abraham, MM ^{[1
]}

Chakoumakos, BC ^{[1
]}

Boatner, LA ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831

来源：

INORGANICA CHIMICA ACTA | 1996年 / 248卷 / 01期

关键词：

crystal structures; lanthanide complexes; orthovanadate commplexes; eight-fold coordination complexes;

D O I：

10.1016/0020-1693(95)04971-1

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Refinements of the crystallographic structures of SmVO4, EuVO4, GdVO4 and DyVO4 have been carried out by means of three-dimensional single-crystal X-ray diffractometry. These orthovanadate compounds crystallize in the tetragonal space group I4(1)/amd (Z = 4) with respective lattice constants of a = 7.2647(9), 7.2358(7), 7.2122(7), 7.1429(8) Angstrom and c = 6.384(1), 6.362(1), 6.346(2), 6.300(2) Angstrom. Anisotropic refinements of the structural data using a full-matrix least-squares program yielded final reliability (R) factors of 0.026, 0.049, 0.042 and 0.041 based on 266, 273, 261 and 220 unique reflections for Ln = Sm, Eu, Gd and Dy, respectively. The lanthanide (Ln) atoms are eight-coordinated to oxygen atoms with two unique Ln-O bond lengths. These non-equivalent vertices form two bisphenoidal sets. A distorted triangulated dodecahedron is produced by connecting the oxygen vertices. The orthovanadate group in each compound is a distorted tetrahedron. Important crystal data, parameters, bond lengths and angles are tabulated.

引用

页码：85 / 88

页数：4

共 20 条

[1] ANTIFERROMAGNETIC-RESONANCE IN GDVO4 [J].

ABRAHAM, MM ;

BAKER, JM ;

BLEANEY, B ;

PFEFFER, JZ ;

WELLS, MR .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1992, 4 (24) :5443-5446

[2]

ALLISON SW, 1992, P CLEO QELS 92 C LAS

[3] CRYSTAL STRUCTURES OF RARE-EARTH ORTHOVANADATES [J].

BAGLIO, JA ;

SOVERS, OJ .

JOURNAL OF SOLID STATE CHEMISTRY, 1971, 3 (03) :458-&

[4]

BOATNER LA, 1988, RADIOACTIVE WASTE FO, P507

[5] CRYSTAL-STRUCTURE REFINEMENTS OF ZIRCON-TYPE MVO4 (M=SC, Y, CE, PR, ND, TB, HO, ER, TM, YB, LU) [J].

CHAKOUMAKOS, BC ;

ABRAHAM, MM ;

BOATNER, LA .

JOURNAL OF SOLID STATE CHEMISTRY, 1994, 109 (01) :197-202

[6]

CHEN G, 1993, J PHYS CHEM SOLIDS, V55, P313

[7] CALCULATION OF ABSORPTION CORRECTIONS FOR CAMERA AND DIFFRACTOMETER DATA [J].

COPPENS, P ;

LEISEROWITZ, L ;

RABINOVICH, D .

ACTA CRYSTALLOGRAPHICA, 1965, 18 :1035-+

[8]

FEUSS H, 1972, J SOLID STATE CHEM, V5, P11

[9]

*I MAT RES, 1969, BOND IND DET IN CRYS

[10]

Ibers J.A., 1974, INT TABLES XRAY CRYS, VIV

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