缺陷白钨矿型 Nd2/3[WO4]的晶体结构

IUCrData Pub Date : 2024-03-01 DOI:10.1107/S2414314624001755
Benjamin Knies , Ingo Hartenbach , M. Weil (Editor)
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引用次数: 0

摘要

在熔融石英安瓿瓶中使用氧化钕(III)、氟化钕(III)和三氧化钨合成钨酸钕(VI)的氟化物衍生物,但未获成功。标题化合物的紫色板状单晶体从块体中出现,其结晶为有缺陷的白钨矿类型,氧化物阴离子围绕钕3+阳离子呈十二面体三方配位,六价钨阳离子位于氧化物四面体的中心。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Crystal structure of defect scheelite-type Nd2/3[WO4]

The crystal structure of defect-scheelite type Nd2/3[WO4] consists of [WO4]2− tetra­hedra and trigonal [NdO8]13– dodeca­hedra.

Neodymium(III) ortho-oxidotungstate(VI) was synthesized as a side-product in an unsuccessful synthesis attempt at fluoride derivatives of neodymium tungstate in fused silica ampoules, using neodymium(III) oxide, neodymium(III) fluoride and tungsten trioxide. Violet, platelet-shaped single crystals of the title compound emerged of the bulk, which crystallize in the defect scheelite type with a trigonal dodeca­hedral coordination of oxide anions around the Nd3+ cations and the hexa­valent tungsten cations situated in the centers of oxide tetra­hedra.

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