A New Tetra-nuclear Nd(III) Coordination Polymer Based on Linear Azide and Isonicotinate Anions: Synthesis,Thermal Stability and Near-infrared Luminescent Properties

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摘要 A novel tetra-nuclear Nd(III) coordination polymer, Nd4(μ3-OH)4(μ2-H2O)2(C6H4NO2)6(N3)2(H2O)2 (1) (C6H4NO2-: isonicotinate; N3-: azide anion), was successfully prepared under hydrothermal conditions and fully characterized by C, H and N elemental analysis, IR spectrum, thermal stability and single-crystal X-ray diffraction. It crystallizes in the triclinic system, space group P-1, with Z = 1, a = 8.188 (3) ?, b = 12.516 (5) ?, c = 12.573 (5) ?, α = 107.887 (1)°, β = 104.681 (2)°, γ = 98.086 (6)°, V = 1152.2 (8) ?3, Mr = 1533.73, Dc = 2.210g/cm3, λ = 0.71073 ?, μ = 4.524 mm-1, F (000) = 736, R= 0.0332, wR= 0.0901 for 3954 observed reflections with I>2σ(I) and S = 1.071. The molecular structure of polymer 1 is constructed by four Nd3+ cations, four bridging μ3–OH- anions, two bridging μ2–H2O, six C6H4NO2- anions, two linear azide anions and two coordinated water molecules. The structure of the polymer 1 can be viewed as a 3-D supra-molecular network which constructed by the O–H???O and O–H???N hydrogen bonds between the adjacent chains. Moreover, its near-infrared luminescence and luminescence quenching for Cu2+ cation have also been investigated in detail.

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	仲志国
	李婧
	冯玉全

关键词 ： Tetra-nuclear Nd(III) complex, Linear azide anion, Thermal stability, Near-infrared fluorescent properties

Abstract：A novel tetra-nuclear Nd(III) coordination polymer, Nd4(μ3-OH)4(μ2-H2O)2(C6H4NO2)6(N3)2(H2O)2 (1) (C6H4NO2-: isonicotinate; N3-: azide anion), was successfully prepared under hydrothermal conditions and fully characterized by C, H and N elemental analysis, IR spectrum, thermal stability and single-crystal X-ray diffraction. It crystallizes in the triclinic system, space group P-1, with Z = 1, a = 8.188 (3) ?, b = 12.516 (5) ?, c = 12.573 (5) ?, α = 107.887 (1)°, β = 104.681 (2)°, γ = 98.086 (6)°, V = 1152.2 (8) ?3, Mr = 1533.73, Dc = 2.210g/cm3, λ = 0.71073 ?, μ = 4.524 mm-1, F (000) = 736, R= 0.0332, wR= 0.0901 for 3954 observed reflections with I>2σ(I) and S = 1.071. The molecular structure of polymer 1 is constructed by four Nd3+ cations, four bridging μ3–OH- anions, two bridging μ2–H2O, six C6H4NO2- anions, two linear azide anions and two coordinated water molecules. The structure of the polymer 1 can be viewed as a 3-D supra-molecular network which constructed by the O–H???O and O–H???N hydrogen bonds between the adjacent chains. Moreover, its near-infrared luminescence and luminescence quenching for Cu2+ cation have also been investigated in detail.

Key words： Tetra-nuclear Nd(III) complex Linear azide anion Thermal stability Near-infrared fluorescent properties

收稿日期: 2020-04-13 出版日期: 2020-11-09

基金资助:Project supported by the National Natural Science Foundation of China (No. 21601095)

通讯作者: yqfeng2008@126.com E-mail: yqfeng2008@126.com

引用本文:

仲志国;李婧;冯玉全. A New Tetra-nuclear Nd(III) Coordination Polymer Based on Linear Azide and Isonicotinate Anions: Synthesis,Thermal Stability and Near-infrared Luminescent Properties[J]. 结构化学, 2020, 39(11): 2046-2052.
ZHONG Zhi-Guo;LI Jing;FENG Yu-Quan. A New Tetra-nuclear Nd(III) Coordination Polymer Based on Linear Azide and Isonicotinate Anions: Synthesis,Thermal Stability and Near-infrared Luminescent Properties. CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, 2020, 39(11): 2046-2052.

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http://manu30.magtech.com.cn/jghx/CN/ 或 http://manu30.magtech.com.cn/jghx/CN/Y2020/V39/I11/2046

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