Syntheses, crystal structure, and magnetic characterization of two 3d-4f heterometallic coordination polymers: H3O[LnMn2(2,6-dipic)3Ac2(H2O)6]·3H2O (Ln: Ho, Dy)

IF 2.1 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Structural Chemistry Pub Date : 2024-12-13 DOI:10.1007/s11224-024-02412-3

Xue Huang, Xiaohan Gao, Chenglong Li, Shuai Guo, Xuechuan Lv, Meiqi Guo, Xuemeng Hu

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Abstract

Two 3d-4f heterometallic coordination polymers H₃O[LnMn₂(2,6-dipic)₃Ac₂(H₂O)₆]·3H₂O (Ln: Ho, Dy) were synthesized through hydrothermal synthesis method and characterized by single-crytal X-ray diffraction. The isostructural complexes crystallize in C2/c space group (Ln: Ho, a = 2.22782(10) nm, b = 1.02640(5) nm, c = 2.34038(8) nm, V = 3.6680 (3) nm³, Z = 4) and (Ln: Dy, a = 2.23161(9) nm, b = 1.02809(4) nm, c = 1.79538(7) nm, V = 3.6941 (3) nm³, Z = 4). A special semi-staggered network was constructed by Ln^III, Mn^II ions, and the oxygen atoms on the flat of the a and b axes. From the c-axis direction, the networks were piled up by the π-π force from the coordinated pyridine-2,6-dicarboxylic acid. Magnetic susceptibility measurements were carried out, and the magnetic behavior of the complexes revealed the lack of magnetic coupling and the occurrence of weak antiferromagnetic interactions within the Ho^III − Ho^III (1) and Dy^III − Dy^III (2) ions.

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两种3d-4f异质金属配位聚合物h30o [LnMn2(2,6-dipic)3Ac2(H2O)6]·3H2O （Ln: Ho, Dy）的合成、晶体结构和磁性表征

采用水热法合成了两种3d-4f异质金属配位聚合物h30o [LnMn2(2,6-dipic)3Ac2(H2O)6]·3H2O (Ln: Ho, Dy)，并用单晶x射线衍射对其进行了表征。同构配合物在C2/c空间群中结晶(Ln: Ho, a = 2.22782(10) nm, b = 1.02640(5) nm, c = 2.34038（8) nm, V = 3.6680 (3) nm3, Z = 4）和(Ln: Dy, a = 2.23161(9) nm, b = 1.02809(4) nm, c = 1.79538（7) nm, V = 3.6941 (3) nm3, Z = 4）。LnIII、MnII离子和氧原子在A轴和b轴平面上形成了一个特殊的半交错网络。在c轴方向上，网络是由配位吡啶-2,6-二羧酸的π-π力堆积而成。磁化率测量表明，配合物的磁性行为表明HoIII−HoIII(1)和DyIII−DyIII(2)离子之间缺乏磁耦合，并且存在弱反铁磁相互作用。

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来源期刊

Structural Chemistry 化学-化学综合

CiteScore

3.80

自引率

11.80%

发文量

227

审稿时长

3.7 months

期刊介绍： Structural Chemistry is an international forum for the publication of peer-reviewed original research papers that cover the condensed and gaseous states of matter and involve numerous techniques for the determination of structure and energetics, their results, and the conclusions derived from these studies. The journal overcomes the unnatural separation in the current literature among the areas of structure determination, energetics, and applications, as well as builds a bridge to other chemical disciplines. Ist comprehensive coverage encompasses broad discussion of results, observation of relationships among various properties, and the description and application of structure and energy information in all domains of chemistry. We welcome the broadest range of accounts of research in structural chemistry involving the discussion of methodologies and structures,experimental, theoretical, and computational, and their combinations. We encourage discussions of structural information collected for their chemicaland biological significance.