由醚氧桥连四羧酸配体构筑的锰(Ⅱ)和锌(Ⅱ)配位聚合物的合成、晶体结构、荧光及磁性质 |
Syntheses, Crystal Structures, Luminescent and Magnetic Properties of 2D Manganese(Ⅱ) and Zinc(Ⅱ) Coordination Polymers Based on an Ether-Bridged Tetracarboxylic Acid |
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摘要: 采用水热方法,用醚氧桥连四羧酸配体(H4L)和菲咯啉(phen)、吡啶(py)分别与MnCl2·4H2O和ZnCl2反应,合成了2个二维配位聚合物{[Mn2(μ6-L)(phen)2]·5H2O}n(1)和{[Zn2(μ7-L)(py)]·H2O}n(2),并对其结构、荧光和磁性质进行了研究。结构分析结果表明2个配合物分别属于三斜和单斜晶系,P1和I2/a空间群。配合物1和2分别具有基于四核锰和双核锌的二维层结构。荧光和磁性研究结果表明,配合物2在室温下能发出蓝色荧光,聚合物1中相邻Mn(Ⅱ)离子间存在反铁磁相互作用。 |
关键词: 配位聚合物 醚氧桥连四羧酸配体 荧光 磁性 |
基金项目: 广东省高等职业院校珠江学者岗位计划资助项目(2015,2018),广东轻院珠江学者人才类项目(No.RC2015-001),生物无机与合成化学教育部重点实验室开放基金(2016),广东省高校创新团队项目(No.2017GKCXTD001),广州市科技计划项目(No.201904010381),深圳市科技计划项目(No.JCYJ20170817112445033,GGFW2017041209483817),广东省大学生科技创新培育专项(No.pdjh2019b0690),广东轻院科技成果培育项目(No.KJPY2018-010)和广东轻院优秀青年基金项目(No.QN2018-007)资助。 |
Abstract: Two 2D manganese(Ⅱ) and zinic(Ⅱ) coordination polymers, namely {[Mn2(μ6-L)(phen)2]·5H2O}n (1) and {[Zn2(μ7-L)(py)]·H2O}n (2), have been constructed hydrothermally using H4L (H4L=3,3',4,5'-diphenyl ether tetra-carboxylic acid), phen (phen=1,10-phenanthroline), py (py=pyridine), and manganese or zinc chlorides. Single-crystal X-ray diffraction analyses revealed that two complexes crystallize in the triclinic or monoclinic systems, space groups P1 or I2/a. Both complexes feature a 2D sheet structure based on Mn4 or Zn2 subunits. The luminescent and magnetic properties for two complexes were also investigated. The results of fluorescence and magnetic studies show that complex 2 can emit blue fluorescence at room temperature, and antiferromagnetic interactions exist between adjacent Mn(Ⅱ) ions in polymer 1. |
Keywords: coordination polymer ether-bridged tetracarboxylic acid luminescent properties magnetic properties |
投稿时间:2019-07-26 修订日期:2019-11-06 |
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黎彧,赵振宇,邹训重,冯安生,顾金忠.由醚氧桥连四羧酸配体构筑的锰(Ⅱ)和锌(Ⅱ)配位聚合物的合成、晶体结构、荧光及磁性质[J].无机化学学报,2020,36(2):377-384. |
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