Hydrothermal synthesis and crystal structures of Nd(IO3)3 and AI(IO3)3

被引：34

作者：

Chen, XA ^{[1
]}

Xue, HP ^{[1
]}

Chang, XN ^{[1
]}

Zang, HG ^{[1
]}

Xiao, WQ ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100022, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2005年 / 398卷 / 1-2期

关键词：

metal iodate; hydrothermal synthesis; crystal structure;

D O I：

10.1016/j.jallcom.2005.01.050

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：

Two metal iodates, Nd(IO3)(3) and AI(IO3)(3), have been prepared by hydrothermal reactions at 170 degrees C. The X-ray single-crystal structural analysis showed that Nd(IO3)(3) presented here is a new polymorph crystallizing in a monoclinic space group P2(1)/n In with a = 8.859(1) angstrom, b = 5.9296(5)angstrom, c = 15.301(3)angstrom, beta=96.95(1)degrees, Z=4. Al(IO3)(3) crystallizes in a non-centrosymmetric group P6(3) with a=9.003(1)angstrom, c = 5.2406(5) angstrom, Z=2. The crystal structure of Nd(IO3)(3) consists of 1D chains of edge-sharing NdO9 polyhedra, which are stitched into slabs through the bridging 103 groups; and slabs are held together via the weak I-O bonds resulting in a 3D framework. AI(103)3 is characterized by the slightly distorted AlO6 octahedra that are bridged by 103 groups giving rise to a 3D polar network. Infrared spectra further confirmed that both compounds contain low symmetric IO3- groups. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：173 / 177

页数：5

共 24 条

[1] TRANSITION-METAL IODATES .7. CRYSTALLOGRAPHIC AND NONLINEAR OPTIC SURVEY OF 4F-IODATES [J].

ABRAHAMS, SC ;

BERNSTEIN, JL ;

NASSAU, K .

JOURNAL OF SOLID STATE CHEMISTRY, 1976, 16 (1-2) :173-184

[2]

[Anonymous], 1996, J APPL CRYSTALLOGR, DOI DOI 10.1107/S0021889895015081

[3] CADMIUM DI-IODATE [J].

BACH, H ;

KUPPERS, H .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1978, 34 (JAN) :263-265

[4]

Balicheva T. G., 1987, Russian Journal of Inorganic Chemistry, V32, P811

[5] Structural relationships, interconversion, and optical properties of the uranyl iodates, UO2(IO3)2 and UO2(IO3)2(H2O):: A comparison of reaactions under mild and supercritical conditions [J].

Bean, AC ;

Peper, SM ;

Albrecht-Schmitt, TE .

CHEMISTRY OF MATERIALS, 2001, 13 (04) :1266-1272

[6] Crystal structure of anhydrous bismuth iodate, Bi(IO3)3 [J].

Bentria, B ;

Benbertal, D ;

Bagieu-Beucher, M ;

Masse, R ;

Mosset, A .

JOURNAL OF CHEMICAL CRYSTALLOGRAPHY, 2003, 33 (11) :867-873

[7] BOND-VALENCE PARAMETERS OBTAINED FROM A SYSTEMATIC ANALYSIS OF THE INORGANIC CRYSTAL-STRUCTURE DATABASE [J].

BROWN, ID ;

ALTERMATT, D .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1985, 41 (AUG) :244-247

[8] DETERMINATION OF CRYSTAL-STRUCTURE OF VARIETY OF HYDROXYCARBONATES OF RARE-EARTHS LNOHCO3 (LN=NA) [J].

DEXPERT, H ;

CARO, P .

MATERIALS RESEARCH BULLETIN, 1974, 9 (11) :1577-1585

[9] Hydrothermal synthesis of rare earth iodates from the corresponding periodates:: II.: Synthesis and structures of Ln(IO3)3 (Ln = Pr, Nd, Sm, Eu, Gd, Tb, Ho, Er) and Ln(IO3)3•2H2O (Ln = Eu, Gd, Dy, Er, Tm, Yb) [J].

Douglas, P ;

Hector, AL ;

Levason, W ;

Light, ME ;

Matthews, ML ;

Webster, M .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 2004, 630 (03) :479-483

[10] CRYSTAL-STRUCTURE OF SYNTHETIC LAUTARITE, CA(IO3)2 [J].

GHOSE, S ;

WAN, C ;

WITTKE, O .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1978, 34 (JAN) :84-88

← 1 2 3 →