一例锶配合物的合成、结构及表征

人工晶体学报 ›› 2024, Vol. 53 ›› Issue (2): 293-299.

一例锶配合物的合成、结构及表征

保玉婷^1,2, 梁毅农^1,2, 孙赞^1,2

1.青海民族大学化学化工学院,西宁 810007;
2.青藏高原资源化学与生态环境保护国家民委重点实验室,西宁 810007

收稿日期:2023-09-15 出版日期:2024-02-15 发布日期:2024-02-04
通信作者: 孙赞,博士,副教授。E-mail:sunzan_2006@126.com
作者简介:保玉婷(1997—),女,青海省人,硕士研究生。E-mail:18997239423@qq.com
基金资助:
青海省自然科学基金(2020-ZJ-964Q);2022年青海民族大学研究生创新项目(12M2022014)

Synthesis, Structure and Characterization of a Strontium Complex

BAO Yuting^1,2, LIANG Yinong^1,2, SUN Zan^1,2

1. College of Chemistry and Engineering, Qinghai Minzu University, Xining 810007, China;
2. Key Laboratory of Resource Chemistry and Eco-Environmental Protection in Tibetan Plateau (Qinghai Minzu University), State Ethnic Affairs Commission, Xining 810007, China

Received:2023-09-15 Online:2024-02-15 Published:2024-02-04

摘要/Abstract

摘要： 在溶剂热条件下,以1,4,5,8-萘四羧酸(H₄L1)为配体,六水合氯化锶为金属源合成了一例锶配合物[Sr(L)₂(H₂O)₄]_n(1)。通过元素分析(EA)、X射线单晶衍射(SXRD)、X射线粉末衍射(PXRD)、红外光谱(IR)和热重分析(TGA)进行结构表征。X射线单晶衍射结果表明,1,4,5,8-萘四羧酸(H₄L1)发生原位反应生成1,3-二氧代-1H,3H-苯并[脱]异色烯-6,7-二羧酸(H₂L)。在配合物1中,每个锶原子位于四方反棱柱的几何构型中,配体连接金属延伸形成一维链状结构,链与链之间通过氢键与π…π堆积作用形成2D超分子结构。探究了配合物的固态发光行为,发现配合物在211 nm的激发波长下产生宽的发射光谱带(450~690 nm),并在535 nm处出现最大发射波长,因此可知配合物是一种潜在的绿光材料。

关键词: 溶剂热合成, 锶配合物, 晶体结构, 荧光性质, 原位反应

Abstract: A Sr(II) complex [Sr(L)₂(H₂O)₄]_n (1) was synthesized with 1,4,5,8-naphthalene tetracarboxylic acid (H₄L1) and strontium chloride hexahydrate under solvothermal conditions. The structure was characterized by elemental analysis (EA), single crystal X-ray diffraction (SXRD), powder X-ray diffraction (PXRD), infrared spectroscopy (IR) and thermogravimetric analysis (TGA). The single crystal X-ray diffraction results indicate that H₄L1 undergoes in-situ reaction to generate 1,3-dioxo-1H,3H-benzo[de]isomere-6,7-dicarboxylic acid (H₂L). In complex 1, each Sr(II) atom is located in the geometric configuration of a square antiprism. The L^- ligands connect Sr atoms to form a one-dimensional chain structure. 2D supramolecular structure is formed through hydrogen bonding and π…π stacking interactions. The solid states luminescence behavior of complex 1 was explored. It is found that complex 1 produces a wide emission spectrum band (450~690 nm) at the excitation wavelength of 211 nm, and the maximum emission wavelength appears at 535 nm. Therefore, it can be seen that complex 1 is a potential green light material.

Key words: solvent thermal synthesis, strontium complex, crystal structure, fluorescence property, in-situ reaction

中图分类号:

O641.4

保玉婷, 梁毅农, 孙赞. 一例锶配合物的合成、结构及表征[J]. 人工晶体学报, 2024, 53(2): 293-299.

BAO Yuting, LIANG Yinong, SUN Zan. Synthesis, Structure and Characterization of a Strontium Complex[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(2): 293-299.

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