Synthesis and crystal structure of [Sr(urea)(NO3)2]n

IF 0.5 Q4 CRYSTALLOGRAPHY

Acta Crystallographica Section E: Crystallographic Communications Pub Date : 2025-02-01 DOI:10.1107/S2056989024012386

Aysanem Bektursinova , Zulfiya Djumanazarova , Zamira Uzakbergenova , Jamshid Ashurov , Akram A Khan , Shakhnoza Kadirova , Batirbay Torambetov

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Abstract

The molecular and crystal structure of the [Sr(urea)(NO₃)₂]_n complex was studied to investigate the various intermolecular interactions.

The crystal structure of poly[di-μ₂-nitrato-μ₂-urea-strontium(II)], [Sr(NO₃)₂(CH₄N₂O)]_n, was determined using single-crystal X-ray diffraction. Crystallizing in the orthorhombic space group Aba2, the asymmetric unit consists of an Sr^II cation, two nitrate anions, and two half urea molecules. The Sr^II cation adopts a distorted decahedral geometry coordinated by ten oxygen atoms, with Sr—O bond lengths ranging from 2.573 (3) to 2.847 (5) Å. The nitrate anions act as bidentate ligands, displaying both terminal and bridging coordination modes. The structure features a robust coordination network supported by hydrogen bonding. These results provide insight into the coordination behaviour of Sr^II with nitrate and urea ligands, contributing to the understanding of supramolecular architectures in metal–organic frameworks (MOFs).

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[Sr（尿素）（NO3）2] n的合成及晶体结构

用单晶x射线衍射测定了聚[di-μ2-硝基-μ2-尿素-锶（II）], [Sr(NO3)2(CH4N2O)] n的晶体结构。该不对称单元在正方阵空间基Aba2中结晶，由一个SrII阳离子、两个硝酸盐阴离子和两个半尿素分子组成。SrII阳离子呈十氧原子配位的畸变十面体结构，Sr-O键长为2.573 (3)~ 2.847 (5)Å。硝酸盐阴离子作为双齿配体，具有末端配位模式和桥接配位模式。该结构具有由氢键支持的坚固的配位网络。这些结果有助于深入了解SrII与硝酸盐和尿素配体的配位行为，有助于理解金属有机框架（MOFs）中的超分子结构。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.