Zinc(II) and cadmium(II) coordination polymers with bis(4-pyridyl)benzylamine: structure and photoluminescence

IF 1.7 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Journal of Inclusion Phenomena and Macrocyclic Chemistry Pub Date : 2021-03-25 DOI:10.1007/s10847-021-01058-6

Ah Rim Jeong, Kil Sik Min

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引用次数: 2

Abstract

Two coordination polymers, [(bpba)Zn(CH₃COO)₂]_n (1) and [(bpba)₃Cd₂(NO₃)₄]_n·nMeOH·4nH₂O (2) (bpba = bis(4-pyridyl)benzylamine), were obtained using Zn(CH₃COO)₂·2H₂O/Cd(NO₃)₂·4H₂O and bpba in a mixture of solvents, and were further characterized. The zinc(II) ion of 1 showed a tetrahedral geometry with two oxygen atoms of the acetate ligands and two pyridine groups of the bpba ligands, and it is linked to the neighboring zinc(II) ions through the bpba ligands, giving rise to an interesting one-dimensional helical structure. Contrastingly, the cadmium(II) ion of polymer 2 was bonded by three pyridine groups of three different bpba ligands and four oxygen atoms of two nitrate ligands, exhibiting a T-shaped geometry. Thus, polymer 2 forms a two-dimensional wave-like structure by the coordination of cadmium(II) ion and bpba ligand to each other. Polymers 1 and 2 showed strong UV emissions depending on the metal ions and are red-shifted, compared to the bpba ligand.

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含双(4-吡啶基)苄胺的锌(II)和镉(II)配位聚合物:结构与光致发光

用Zn(CH3COO)2·2H2O/Cd(NO3)2·4H2O和bpba在混合溶剂中得到了[(bpba)Zn(CH3COO)2]n(1)和[(bpba)3Cd2(NO3)4]n·nMeOH·4nH2O (2) (bpba =双(4-吡啶基)苄胺)两种配位聚合物，并对其进行了进一步表征。1的锌(II)离子与乙酸配体的两个氧原子和bpba配体的两个吡啶基团呈四面体结构，并通过bpba配体与相邻的锌(II)离子相连，形成有趣的一维螺旋结构。相反，聚合物2中的镉(II)离子被三种不同的bpba配体的三个吡啶基团和两种硝酸盐配体的四个氧原子键合，呈t形几何。因此，聚合物2通过镉(II)离子与bpba配体相互配位形成二维波状结构。与bpba配体相比，聚合物1和2显示出强烈的紫外线辐射，这取决于金属离子，并且红移。

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来源期刊

Journal of Inclusion Phenomena and Macrocyclic Chemistry Agricultural and Biological Sciences-Food Science

CiteScore

4.10

自引率

8.70%

发文量

期刊介绍： The Journal of Inclusion Phenomena and Macrocyclic Chemistry is the premier interdisciplinary publication reporting on original research into all aspects of host-guest systems. Examples of specific areas of interest are: the preparation and characterization of new hosts and new host-guest systems, especially those involving macrocyclic ligands; crystallographic, spectroscopic, thermodynamic and theoretical studies; applications in chromatography and inclusion polymerization; enzyme modelling; molecular recognition and catalysis by inclusion compounds; intercalates in biological and non-biological systems, cyclodextrin complexes and their applications in the agriculture, flavoring, food and pharmaceutical industries; synthesis, characterization and applications of zeolites. The journal publishes primarily reports of original research and preliminary communications, provided the latter represent a significant advance in the understanding of inclusion science. Critical reviews dealing with recent advances in the field are a periodic feature of the journal.