High-resolution crystal structure of the double nitrate hydrate [La(NO3)6]2[Ni(H2O)6]3·6H2O

IF 0.5 Q4 CRYSTALLOGRAPHY Acta Crystallographica Section E: Crystallographic Communications Pub Date : 2024-05-01 DOI:10.1107/S205698902400327X

David Wenhua Bi , Yong Liu , Arnaud Magrez , B. Therrien (Editor)

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Abstract

Very large high-quality crystals of a new member of the family of double nitrates, namely, [La(NO₃)₆]₂[Ni(H₂O)₆]₃·6H₂O, were crystallized in large amounts. The structure was determined via single-crystal X-ray diffraction to high resolution. Extensive structural information, including hydrogen-bonding details, was obtained at the same time.

This study introduces bis[hexakis(nitrato-κ² O,O′)lanthanum(III)] tris[hexaaquanickel(II)] hexahydrate, [La(NO₃)₆]₂[Ni(H₂O)₆]₃·6H₂O, with a structure refined in the hexagonal space group R

. The salt comprises [La(NO₃)₆]³⁻ icosahedra and [Ni(H₂O)₆]²⁺ octahedra, thus forming an intricate network of interpenetrating honeycomb lattices arranged in layers. This arrangement is stabilized through strong hydrogen bonds. Two successive layers are connected via the second [Ni(H₂O)₆]²⁺ octahedra, forming sheets which are stacked perpendicular to the c axis and held in the crystal by van der Waals forces. The synthesis of [La(NO₃)₆]₂[Ni(H₂O)₆]₃·6H₂O involves dissolving lanthanum(III) and nickel(II) oxides in nitric acid, followed by slow evaporation, yielding green hexagonal plate-like crystals.

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双硝酸盐水合物[La(NO3)6]2[Ni(H2O)6]3-6H2O的高分辨率晶体结构

本研究介绍了双[六(硝基κ2 O,O′)镧(III)]三[六泉镍(II)]六水合物[La(NO3)6]2[Ni(H2O)6]3-6H2O，其结构细化为六方空间群 R\overline{3} 。这种盐由[La(NO3)6]3-二十面体和[Ni(H2O)6]2+八面体组成，从而形成了一个错综复杂的蜂窝晶格网络，层层相互渗透。这种排列通过强氢键得以稳定。两个连续的层通过第二个[Ni(H2O)6]2+八面体连接起来，形成垂直于 c 轴堆叠的薄片，并通过范德华力固定在晶体中。[La(NO3)6]2[Ni(H2O)6]3-6H2O 的合成过程包括将镧（III）和镍（II）氧化物溶解在硝酸中，然后缓慢蒸发，最后得到绿色六边形板状晶体。

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来源期刊

Acta Crystallographica Section E: Crystallographic Communications Chemistry-Chemistry (all)

CiteScore

1.90

自引率

0.00%

发文量

351

审稿时长

3 weeks

期刊介绍： Acta Crystallographica Section E: Crystallographic Communications is the IUCr''s open-access structural communications journal. It provides a fast, simple and easily accessible publication mechanism for crystal structure determinations of inorganic, metal-organic and organic compounds. The electronic submission, validation, refereeing and publication facilities of the journal ensure rapid and high-quality publication of fully validated structures. The primary article category is Research Communications; these are peer-reviewed articles describing one or more structure determinations with appropriate discussion of the science.