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Two New Iron Coordination Polymers Based on Fe-pyta Chains Incorporating Pyridine-2,4,6-tricarboxylate
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作者 CHEN Zi-yun PENG Meng-xia 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2008年第4期392-395,共4页
Reaction of FeCIz'6H20, pyridine-2,4,6-tricarboxylic acid(H3pyta) and NaOH in the hydrothermal system at 185 ℃ resulted in the formation of 1D coordination polymer[Fe(Hpyta)(H2O)2](1) based on Fe-Hpyta chain... Reaction of FeCIz'6H20, pyridine-2,4,6-tricarboxylic acid(H3pyta) and NaOH in the hydrothermal system at 185 ℃ resulted in the formation of 1D coordination polymer[Fe(Hpyta)(H2O)2](1) based on Fe-Hpyta chains. When the abpt[abpt=-4-amino-3,5-bis(4-pyridyl)-l,2,4-triazole] ligand was employed in the reaction system, a 3D supramolecular porous network (H2bpt)[Fe(pyta)(H2O)2]·4H2O(2) was obtained. The framework was constructed with negative (Fe-pyta) chains and the positive H3bpt^+ in situ, formed from the abpt reagent, to form 1D channels filled with guest water molecules via hydrogen-bonds. X-Ray diffraction crystal structure analysis shows that complex 1 crystallized in the monoclinic system, space group C2/c, a=1.1490(5) nm, b=0.9008(4) nm, c=1.0058(5) nm, B=107.254(9)°, V=0.9942(8) nm3, Z=4; and complex 2 crystallizes in the triclinic system, space group P1 with a=0.90392(11) nm, b=0.96027(11 ) nm, c=1.55540(18) nm, a=73.558(2)°,B= 86.126(2)°,r= 68.745(2)°, V=1.2059(2) nm^3 and Z=2. 展开更多
关键词 Iron(Ⅱ) Coordination polymer pyridine-2 4 6-tricarboxylate 4-Amino-3 5-bis(4-pyridyl)-1 2 4-triazole Hydrothermal
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Two Novel Lanthanide Coordination Polymers with Differently Bridging Pyridine-2,4,6-tricarboxylate Ligand
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作者 CHEN Zi-yun PENG Meng-xia 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2009年第6期796-800,共5页
Two new lanthanide-pyridinetricarboxylic complexes formulated as [Lu(pyta)(H2O)3](1) and [La(pyta)· (H2O)2]-1.SH2O(2) were synthesized through hydrothermal reactions of LuC13 or La(NO3)y6H2O with py... Two new lanthanide-pyridinetricarboxylic complexes formulated as [Lu(pyta)(H2O)3](1) and [La(pyta)· (H2O)2]-1.SH2O(2) were synthesized through hydrothermal reactions of LuC13 or La(NO3)y6H2O with pyridine-2,4,6-tricarboxylic acid(H3pyta), respectively, and characterized by X-ray crystallography. Complex 1 crystal- lized in the monoclinic system with space group P21/n, a=1.01930(12) nm, b=0.73423(9) nm, c=1.45449(17) Mm, β=94.734(2)° V=1.0848(2) nm3, Z=4. Complex 2 crystallized in the monoclinic system with space group P21/c, a=0.68474(8) nm, b=1.20982(15) nm, c=1.36063(17) nm, β=99.823(2)°, V=l.1106(2) nm3, Z=4. The overall structure of complex 1 consists of 2D binuclear Lu2(pyta)4-based grid coordination layers which are further extended into a 3D supramolecular architecture via hydrogen bonding interactions. With different coordination modes of the pyta ligand, complex 2 is a 3D porous network comprised of La-carboxylate framework. 展开更多
关键词 pyridine-2 4 6-tricarboxylic acid Lu(Ⅲ) La(Ⅲ) Hydrothermal method
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Fluorescence determination of europium with pyridine-2,4,6-tricarboxylic acid 被引量:1
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作者 ZHAOJun ZHAOGuohu LIANGHuiguang ZHANGHaobo 《Rare Metals》 SCIE EI CAS CSCD 2005年第2期115-118,共4页
Europium can form a stable chelate with pyridine-2,4,6-tricarboxylic acid (PTA) with a ratio of 1:1 in aqueous. The system, having the maximum excitation and emission wavelengths at 311.0 nm and 616.3 nm, separately, ... Europium can form a stable chelate with pyridine-2,4,6-tricarboxylic acid (PTA) with a ratio of 1:1 in aqueous. The system, having the maximum excitation and emission wavelengths at 311.0 nm and 616.3 nm, separately, shows a constant fluorescence intensity in the pH range of 11.0-12.0. The method has high selectivity and sensitivity as well as low effect from foreign ions. The optimum determinate conditions were obtained. The fluorescence intensity is a linear function of Eu3+, concentration in the range of 0.0029-1.5200 mu g center dot mL(-1) and the limit of detection is 2.90 ng center dot mL(-1). 展开更多
关键词 fluorescent determination EUROPIUM pyridine-2 4 6-tricarboxylic acid LUMINESCENCE
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Mixed Rare-Earth Complexes of Eu(Ⅲ) and Y(Ⅲ) with Pyridine-2,4,6-tricarboxylic Acid and Their Photoluminescent Properties 被引量:2
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作者 王宏胜 赵小庆 +2 位作者 刘明丽 师唯 程鹏 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2012年第9期2097-2102,共6页
A series of rare-earth luminescent complexes {[Eu(pta)(H2O)3]·H2O}n(1, H3pta=pyridine-2,4,6-tricarboxylic acid) and {[EuxY(1-x)(pta)(H2O)3]·H2O}n(2-10) have been synthesized. Complexes 1 and 8 ... A series of rare-earth luminescent complexes {[Eu(pta)(H2O)3]·H2O}n(1, H3pta=pyridine-2,4,6-tricarboxylic acid) and {[EuxY(1-x)(pta)(H2O)3]·H2O}n(2-10) have been synthesized. Complexes 1 and 8 were determined by single-crystal X-ray diffraction, while other complexes were characterized by powder X-ray diffraction, displaying the similar structural mode. The luminescent properties of complexes 1--10 were investigated and the results show that the emission intensities of mixed rare-earth complexes 2--10 are the same or even higher than that of homometallic complex 1 with the increasing Y(Ⅲ) ions. 展开更多
关键词 rare-earth complex pyridine-2 4 6-tricarboxylic acid luminescent property Y(III) ions
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Synthesis,Structure and Near-infrared Photoluminescent Property of a Tetranuclear Er(Ⅲ) Complex 被引量:1
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作者 王宏胜 李学峰 夏军 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2015年第1期87-94,共8页
A tetranuclear erbium complex with pyridine-2,4,6-tricarboxylic acid(H3ptc), [Er4(ptc)4(H2O)18]·6H2O(1), has been synthesized by hydrothermal method. The complex crystallizes in triclinic system, space gr... A tetranuclear erbium complex with pyridine-2,4,6-tricarboxylic acid(H3ptc), [Er4(ptc)4(H2O)18]·6H2O(1), has been synthesized by hydrothermal method. The complex crystallizes in triclinic system, space group P1, with a = 7.620(2), b = 10.459(3), c = 17.418(5) A, α = 92.351(5), β = 92.080(5), γ = 95.627(4)°, V = 1379.1(7)A3 and Z = 2. One Er(III) cation is eight-coordinated and the other is nine-coordinated. The complex exhibits characteristic luminescence of erbium cation in near-infrared region upon the excitation of UV-rays. Furthermore, a three-dimensional supramolecular complex was formed by weak hydrogen bonds among the tetranuclear units. 展开更多
关键词 pyridine-2 4 6-tricarboxylic acid photoluminescence near infrared ERBIUM
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