3-甲基吡唑-5-甲酸基Zn(Ⅱ)配合物的合成、晶体结构及荧光性质 |
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作者姓名: | 王 燕 刘光祥 王 宁 沈应中 |
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作者单位: | 1. 南京航空航天大学材料科学与技术学院应化系,南京,210016 2. 安庆师范学院化学化工学院,安庆,246003 |
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基金项目: | 国家高技术研究发展计划(863计划),江苏省自然科学基金,中国博士后科学基金,江苏省博士后自然科学基金 |
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摘 要: | A transition metal complex Zn(mpc)2(H2O)2 (Hmpc=3-methylpyrazole-5-carboxylic acid) has been synth-esized by the reaction of Hmpc with Zn(NO3)2·6H2O using hydrothermal method, which was characterized by IR spe-ctra, elemental analysis and single-crystal X-ray structure analysis. The structure reveals that the complex crystallizes in the trigonal space group R3c with the ZnⅡ atom on a threefold axis, composed of one ZnⅡ atom, two independent mpc- ligands and two coordinated water. Hydrogen bonds link the molecules into a three-dimensional supramolecular architecture. Fluorescent analysis in the dilute EtOH solution shows that the title complex exhibits a broad fluorescent band at 471 nm upon photoexcitation at 280 nm and has a bathochromic shift of the emission energy compared with the free ligand, possibly due to metal-to-ligand charge transfer (MLCT). CCDC: 682402.
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关 键 词: | 锌配合物; 吡唑羧酸; 晶体结构; 荧光性质 |
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