The role of cation-cation interactions in a neptunyl chloride hydrate and topological aspects of neptunyl structural units

被引：24

作者：

Forbes, T. Z. ^{[1
]}

Burns, P. C. ^{[1
]}

机构：

[1] Univ Notre Dame, Dept Civil Engn & Geol Sci, Notre Dame, IN 46556 USA

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2007年 / 180卷 / 01期

基金：

美国国家科学基金会;

关键词：

neptunium; structure determination; X-ray diffraction; cation-cation interactions; graphical representation;

D O I：

10.1016/j.jssc.2006.09.026

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The compound K-4(NpO2)(3)Cl-7(H2O)(4) was synthesized by evaporation of a Np5+-bearing solution. The crystal structure was determined by single crystal X-ray diffraction and refined to R-1 = 0.0374. The compound is triclinic, P-1, a = 8.882(1)A, b = 12.082(2) angstrom, c = 12.403(2) angstrom, alpha = 65.855(2)degrees, beta = 69.604(2)degrees, gamma = 74.432(2)degrees, V = 1126.0(3) angstrom(3), and Z = 2. The structure contains dimers of edge sharing Np5+ pentagonal bipyramids that are linked into infinite chains through cation-cation interactions with an additional Np5+ pentagonal bipyramid. The structural units are linked through bonds to interstitial K cations and by H bonding. A graphical representation for neptunyl structural units including cation-cation interactions is introduced. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：106 / 112

页数：7

共 46 条

[1] Cation-cation interactions in neptunyl(V) compounds:: Hydrothermal preparation and structural characterization of NpO2(IO3) and α- and β-AgNpO2(SeO3) [J].

Albrecht-Schmitt, TE ;

Almond, PM ;

Sykora, RE .

INORGANIC CHEMISTRY, 2003, 42 (12) :3788-3795

[2] CESIUM TETRACHLORODIOXONEPTUNATE(V) [J].

ALCOCK, NW ;

ROBERTS, MM ;

BROWN, D .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1982, 38 (JUN) :1805-1806

[3]

Brown I.D., 2002, CHEM BOND INORGANIC, DOI DOI 10.1093/ACPROF:OSO/9780198742951.001.0001

[4]

BURNS PC, 1995, CAN MINERAL, V33, P1131

[5] U6+ minerals and inorganic compounds:: Insights into an expanded structural hierarchy of crystal structures [J].

Burns, PC .

CANADIAN MINERALOGIST, 2005, 43 :1839-1894

[6] Incorporation mechanisms of actinide elements into the structures of U6+ phases formed during the oxidation of spent nuclear fuel [J].

Burns, PC ;

Ewing, RC ;

Miller, ML .

JOURNAL OF NUCLEAR MATERIALS, 1997, 245 (01) :1-9

[7] Neptunium incorporation into uranyl compounds that form as alteration products of spent nuclear fuel: Implications for geologic repository performance [J].

Burns, PC ;

Deely, KM ;

Skanthakumar, S .

RADIOCHIMICA ACTA, 2004, 92 (03) :151-159

[8] Studtite, [(UO2)(O2)(H2O)2](H2O)2:: The first structure of a peroxide mineral [J].

Burns, PC ;

Hughes, KA .

AMERICAN MINERALOGIST, 2003, 88 (07) :1165-1168

[9]

Burns PC, 1997, CAN MINERAL, V35, P1551

[10]

Burns PC, 1996, CAN MINERAL, V34, P845

← 1 2 3 4 5 →