Five novel SrⅡ-LnⅢ heterometallic coordination polymers based on pyridine-2,6- dicarboxylic acid （H2pda） and imidazole （im）, namely, [LnSr（pda）3（H2O）5]-Him·C2H5OH·3H2O （Ln = Nd （1）; Pr （2））, ...Five novel SrⅡ-LnⅢ heterometallic coordination polymers based on pyridine-2,6- dicarboxylic acid （H2pda） and imidazole （im）, namely, [LnSr（pda）3（H2O）5]-Him·C2H5OH·3H2O （Ln = Nd （1）; Pr （2））, [Ln2Sr（pda）6（H2O）5]-4Him·C2H5OH·5H2O （Ln = Nd （3）; Pr （4））, and [ErSr（pda）3（H2O）4].Him-3.5H2O （5）, have been prepared and structurally characterized. X-ray crystallographic analyses revealed that these complexes display three varieties of l-D chain structures. Several types of hydrogen bonding interactions are found for 1-5, which connect the 1 -D chain structures to form 2-D suoramolecular networks.展开更多
Presented here is a new heterometallic Cu(I)-Sr(Ⅱ) coordination polymer, [Cu(3)Sr_2(isonic)_5 Br_2(H_2O)_3]n·n(H_2O)(1, Hisonic = isonicotinic acid), has been synthesized via the hydrothermal reactions of CuBr, ...Presented here is a new heterometallic Cu(I)-Sr(Ⅱ) coordination polymer, [Cu(3)Sr_2(isonic)_5 Br_2(H_2O)_3]n·n(H_2O)(1, Hisonic = isonicotinic acid), has been synthesized via the hydrothermal reactions of CuBr, Sr(NO_3)_2 and isonicotinic acid. The crystal structure is of triclinic system, space group P1 with a = 7.111(2), b = 14.934(4), c = 18.0255(11) ?, α = 83.137(15), β = 87.155(15), γ = 79.75(2)°, V = 1869.4(8) ?~3, C_(30)H_(29)Br_2Cu(3)N_5O_(14)Sr_2, Mr = 1209.27, Z = 2, Dc = 2.148 g/cm^3, F(000) = 1178, μ = 6.725 mm^(-1), R = 0.0500 and wR = 0.1008 for 4688 observed reflections(I > 2s(I)). Single-crystal X-ray diffraction analysis revealed that compound 1 features a 3 D heterometallic framework stabilized by bifunctional isonic ligands. In addition, the luminescent and photocatalytic properties of compound 1 were also investigated at room temperature.展开更多
A new 3D heterometallic coordination polymer, namely [K2Pr2（C2O4）4·H2O]n（1）, has been successfully synthesized under hydrothermal conditions. X-ray single-crystal diffraction determination reveals that 1 crys...A new 3D heterometallic coordination polymer, namely [K2Pr2（C2O4）4·H2O]n（1）, has been successfully synthesized under hydrothermal conditions. X-ray single-crystal diffraction determination reveals that 1 crystallizes in monoclinic system, space group P21/n with a = 12.060（4）, b = 8.493（3）, c = 15.776（5）（A）, β = 93.235（3）°, V = 1613.4（9） A3, Z = 4, Mr = 730.12, Dc = 3.006 Mg/m^3, μ = 6.581 mm-1, F（000） = 1368, the final R = 0.0283 and wR = 0.0866 for 2939 observed reflections with I 〉 2σ（I）. Complex 1 features an unusual 3D heterometallic coordination framework, in which oxalates exhibit three different coordination behaviours. Moreover, powder X-ray diffraction and thermal properties for 1 have also been investigated.展开更多
A novel heterobimetaUic coordination polymer, {（NH4）2[Cd（H20）Fe（CN）6]}n 1, has been synthesized by using the slow diffusion method and structurally characterized by elemental analysis, 1R spectroscopy and single...A novel heterobimetaUic coordination polymer, {（NH4）2[Cd（H20）Fe（CN）6]}n 1, has been synthesized by using the slow diffusion method and structurally characterized by elemental analysis, 1R spectroscopy and single-crystal X-ray diffraction. The crystal crystallizes in the monoclinic system, space group P21/n, a = 7.4202（16）, b = 14.939（3）, c = 10.868（2） A and ,8 = 91.660（3）°. For 1, five CN groups of Fe（CN）6]4- are involved in bridging. The polymer displays a 3D open microporous framework with 5-connected uninodal （46.64） topology.展开更多
Copper-zinc heterometallic 1D chain coordination polymer has been synthesized and characterized by elemental analysis, and IR spectra etc. The crystal structure was determined by single-crystal X-ray diffraction analy...Copper-zinc heterometallic 1D chain coordination polymer has been synthesized and characterized by elemental analysis, and IR spectra etc. The crystal structure was determined by single-crystal X-ray diffraction analyses. The title complex is 1D chain coordination polymer with the chemical formula {[CuLZn·CuLZn(H2O)]·H2O}n, where H4L=N-(2-hydroxybenzamido)-N’-(3-carboxy- lsalicylidene)ethylenediamine. Its structural unit is comprosed of two tetranuclear cycles formed by two dissymmetrical tetranuclear units. These units polymerized each other to form 1D chain coordi- nation polymer.展开更多
A new heterometallic complex {[Cu（pic）2（H2O）2][Cd2（Hdipic）2（H2O）2Cl2]}n （Mr = 1007.73） has been synthesized under hydrothermal condition and characterized by single-crystal X-ray diffraction. It crystallizes...A new heterometallic complex {[Cu（pic）2（H2O）2][Cd2（Hdipic）2（H2O）2Cl2]}n （Mr = 1007.73） has been synthesized under hydrothermal condition and characterized by single-crystal X-ray diffraction. It crystallizes in triclinic, space group PI^- with a = 5.8397（4）, b = 9.8664（7）, c = 14.1739（10） °A, α= 82.0150（10）, β = 80.4540（10）, γ= 82.3570（10）°, Z= 1, V= 792.47（10）°A^3, Dc = 2.112 g/cm^3,μ（MoKα） = 2.247 mm^-1, F（000） = 495, the final R = 0.0232 and wR = 0.0644 for 2748 observed reflections （I〉 2σ（I））. In the complex, seven-coordinated·Cd ions form a zigzag chain based on the alternated dinuclear Cd units. The neutral [Cu（pic）2（H2O）2] units are located at the centers of the inter space and fasten to the 1-D chain by hydrogen bonds.展开更多
Two new 3D heterometallic (3d-4f) coordination polymers {[Ln2Cu(pydc)4(H2O)6]·2H2O}n [Ln = Eu (1) and Gd (2)] have been synthesized by hydrothermal reactions and characterized by elemental analysis, X-ray single-...Two new 3D heterometallic (3d-4f) coordination polymers {[Ln2Cu(pydc)4(H2O)6]·2H2O}n [Ln = Eu (1) and Gd (2)] have been synthesized by hydrothermal reactions and characterized by elemental analysis, X-ray single-crystal analyses, and IR spectroscopy. X-ray crystal structure analyses show that 1 and 2 possess 3D networks and strong intramolecular hydrogen bonding interactions which was confirmed by thermogravimetric (TG) analysis.展开更多
A 4d-4f heterometallic coordination polymer, [AgNd（pydc）2].2H2O （1） （H2pydc=pyridine-3,4-dicarboxylic acid）, was synthesized under hydrothermal conditions, and fimher characterized by elemental analysis, IR, the...A 4d-4f heterometallic coordination polymer, [AgNd（pydc）2].2H2O （1） （H2pydc=pyridine-3,4-dicarboxylic acid）, was synthesized under hydrothermal conditions, and fimher characterized by elemental analysis, IR, thermogravimetric analysis and single-crystal X-ray dif- fraction. Complex 1 featured a three-dimensional （3D） framework containing one-dimensional （1D） channels occupied by free water molecules, which was constructed from 1D inorganic heterometallic chains and linear pydc linkers. To our knowledge, complex 1 represented a rare example of 3D open-framework 4d-4f heterometallic coordination polymer. After removal of the water molecules fi＇om complex 1, the remaining material had high thermal stability. Moreover, the near-infrared luminescent properties of 1 were also investigated in the solid state.展开更多
Three new 3d-4f heterometallic coordination polymers(CPs), namely,[Pr2(CuL)2(nipt)3(H2O)]·2H2O (Cu2Pr2,1),[Eu2(CuL)2(nipt)3(H2O)]-2H2O(Cu2Eu2, 2) and [Tb2(CuL)4(nipt)3]-8.3H2O(Cu4Tb2,3)(CuL,H2L= 2,3-dioxo-5,6,14,...Three new 3d-4f heterometallic coordination polymers(CPs), namely,[Pr2(CuL)2(nipt)3(H2O)]·2H2O (Cu2Pr2,1),[Eu2(CuL)2(nipt)3(H2O)]-2H2O(Cu2Eu2, 2) and [Tb2(CuL)4(nipt)3]-8.3H2O(Cu4Tb2,3)(CuL,H2L= 2,3-dioxo-5,6,14,15-dibenzo-1,4,8,12-tetraazacyclo-pentadeca-7,13-dien;nipt^2-= 5-nitroisophthalate) were obtained by a solvothermal method and structurally characterized by single-crystal X-ray diffraction analyses, elemental analyses, Fourier transform infrared spectra and ultraviolet visible absorption spectra. In Cu2Pr2 and Cu2Eu2,μ3-bridged and μ5-bridged nipt^2- ligands alternately linked three Ln^3+ and five metal ions(three Ln^3+ and two Cu^2+ ions) to generate a 2D heterometallic framework with 3,3,4,5-connected (3.4.5)(3^2.4^2.5.6^3.72)(4^2.6^3.8)(4^2.6) topology. In Cu4Tb2,μ2-bridged and μ4-bridged nipt2- ligands alternately connected two Tb3+ and four metal ions(two Tb^3+ and two Cu^2+ ions) by carboxylating into a corrugated heterometallic 2D layer with 3-connected (63) topology. The magnetic properties of Cu2Pr2 and Cu2Eu2 were also discussed, the results show tliat both CPs have a weak antimagnetic interaction. Moreover, the near-iiifrared luminescence properties of Cu2Pr2 and Cu2Eu2 were also studied.展开更多
基金Supported by Hundreds of Talents Program(2005012)of CASNNSFC(21272167 and 21201127)Priority Academic Program Development of Jiangsu Higher Education Institution and Graduate Education Innovation Project in Jiangsu Province(CXZZ12_0808)
文摘Five novel SrⅡ-LnⅢ heterometallic coordination polymers based on pyridine-2,6- dicarboxylic acid （H2pda） and imidazole （im）, namely, [LnSr（pda）3（H2O）5]-Him·C2H5OH·3H2O （Ln = Nd （1）; Pr （2））, [Ln2Sr（pda）6（H2O）5]-4Him·C2H5OH·5H2O （Ln = Nd （3）; Pr （4））, and [ErSr（pda）3（H2O）4].Him-3.5H2O （5）, have been prepared and structurally characterized. X-ray crystallographic analyses revealed that these complexes display three varieties of l-D chain structures. Several types of hydrogen bonding interactions are found for 1-5, which connect the 1 -D chain structures to form 2-D suoramolecular networks.
基金Supported by the grants from Guangdong University of Petrochemical Technology
文摘Presented here is a new heterometallic Cu(I)-Sr(Ⅱ) coordination polymer, [Cu(3)Sr_2(isonic)_5 Br_2(H_2O)_3]n·n(H_2O)(1, Hisonic = isonicotinic acid), has been synthesized via the hydrothermal reactions of CuBr, Sr(NO_3)_2 and isonicotinic acid. The crystal structure is of triclinic system, space group P1 with a = 7.111(2), b = 14.934(4), c = 18.0255(11) ?, α = 83.137(15), β = 87.155(15), γ = 79.75(2)°, V = 1869.4(8) ?~3, C_(30)H_(29)Br_2Cu(3)N_5O_(14)Sr_2, Mr = 1209.27, Z = 2, Dc = 2.148 g/cm^3, F(000) = 1178, μ = 6.725 mm^(-1), R = 0.0500 and wR = 0.1008 for 4688 observed reflections(I > 2s(I)). Single-crystal X-ray diffraction analysis revealed that compound 1 features a 3 D heterometallic framework stabilized by bifunctional isonic ligands. In addition, the luminescent and photocatalytic properties of compound 1 were also investigated at room temperature.
基金supported by the National Natural Science of Foundation of China(No.31270388)
文摘A new 3D heterometallic coordination polymer, namely [K2Pr2（C2O4）4·H2O]n（1）, has been successfully synthesized under hydrothermal conditions. X-ray single-crystal diffraction determination reveals that 1 crystallizes in monoclinic system, space group P21/n with a = 12.060（4）, b = 8.493（3）, c = 15.776（5）（A）, β = 93.235（3）°, V = 1613.4（9） A3, Z = 4, Mr = 730.12, Dc = 3.006 Mg/m^3, μ = 6.581 mm-1, F（000） = 1368, the final R = 0.0283 and wR = 0.0866 for 2939 observed reflections with I 〉 2σ（I）. Complex 1 features an unusual 3D heterometallic coordination framework, in which oxalates exhibit three different coordination behaviours. Moreover, powder X-ray diffraction and thermal properties for 1 have also been investigated.
基金supported by the National Natural Science Foundation of China(No.20771083)
文摘A novel heterobimetaUic coordination polymer, {（NH4）2[Cd（H20）Fe（CN）6]}n 1, has been synthesized by using the slow diffusion method and structurally characterized by elemental analysis, 1R spectroscopy and single-crystal X-ray diffraction. The crystal crystallizes in the monoclinic system, space group P21/n, a = 7.4202（16）, b = 14.939（3）, c = 10.868（2） A and ,8 = 91.660（3）°. For 1, five CN groups of Fe（CN）6]4- are involved in bridging. The polymer displays a 3D open microporous framework with 5-connected uninodal （46.64） topology.
文摘Copper-zinc heterometallic 1D chain coordination polymer has been synthesized and characterized by elemental analysis, and IR spectra etc. The crystal structure was determined by single-crystal X-ray diffraction analyses. The title complex is 1D chain coordination polymer with the chemical formula {[CuLZn·CuLZn(H2O)]·H2O}n, where H4L=N-(2-hydroxybenzamido)-N’-(3-carboxy- lsalicylidene)ethylenediamine. Its structural unit is comprosed of two tetranuclear cycles formed by two dissymmetrical tetranuclear units. These units polymerized each other to form 1D chain coordi- nation polymer.
基金The work was supported by the National Natural Science Foundation of China (No. 50572024)
文摘A new heterometallic complex {[Cu（pic）2（H2O）2][Cd2（Hdipic）2（H2O）2Cl2]}n （Mr = 1007.73） has been synthesized under hydrothermal condition and characterized by single-crystal X-ray diffraction. It crystallizes in triclinic, space group PI^- with a = 5.8397（4）, b = 9.8664（7）, c = 14.1739（10） °A, α= 82.0150（10）, β = 80.4540（10）, γ= 82.3570（10）°, Z= 1, V= 792.47（10）°A^3, Dc = 2.112 g/cm^3,μ（MoKα） = 2.247 mm^-1, F（000） = 495, the final R = 0.0232 and wR = 0.0644 for 2748 observed reflections （I〉 2σ（I））. In the complex, seven-coordinated·Cd ions form a zigzag chain based on the alternated dinuclear Cd units. The neutral [Cu（pic）2（H2O）2] units are located at the centers of the inter space and fasten to the 1-D chain by hydrogen bonds.
基金Supported by the National Natural Science Foundation of China (Grant No. 20771048, 20621091)
文摘Two new 3D heterometallic (3d-4f) coordination polymers {[Ln2Cu(pydc)4(H2O)6]·2H2O}n [Ln = Eu (1) and Gd (2)] have been synthesized by hydrothermal reactions and characterized by elemental analysis, X-ray single-crystal analyses, and IR spectroscopy. X-ray crystal structure analyses show that 1 and 2 possess 3D networks and strong intramolecular hydrogen bonding interactions which was confirmed by thermogravimetric (TG) analysis.
基金Project supported by National Natural Science Foundation of China (20971004)the Key Project of Chinese Ministry of Education (210102)
文摘A 4d-4f heterometallic coordination polymer, [AgNd（pydc）2].2H2O （1） （H2pydc=pyridine-3,4-dicarboxylic acid）, was synthesized under hydrothermal conditions, and fimher characterized by elemental analysis, IR, thermogravimetric analysis and single-crystal X-ray dif- fraction. Complex 1 featured a three-dimensional （3D） framework containing one-dimensional （1D） channels occupied by free water molecules, which was constructed from 1D inorganic heterometallic chains and linear pydc linkers. To our knowledge, complex 1 represented a rare example of 3D open-framework 4d-4f heterometallic coordination polymer. After removal of the water molecules fi＇om complex 1, the remaining material had high thermal stability. Moreover, the near-infrared luminescent properties of 1 were also investigated in the solid state.
文摘Three new 3d-4f heterometallic coordination polymers(CPs), namely,[Pr2(CuL)2(nipt)3(H2O)]·2H2O (Cu2Pr2,1),[Eu2(CuL)2(nipt)3(H2O)]-2H2O(Cu2Eu2, 2) and [Tb2(CuL)4(nipt)3]-8.3H2O(Cu4Tb2,3)(CuL,H2L= 2,3-dioxo-5,6,14,15-dibenzo-1,4,8,12-tetraazacyclo-pentadeca-7,13-dien;nipt^2-= 5-nitroisophthalate) were obtained by a solvothermal method and structurally characterized by single-crystal X-ray diffraction analyses, elemental analyses, Fourier transform infrared spectra and ultraviolet visible absorption spectra. In Cu2Pr2 and Cu2Eu2,μ3-bridged and μ5-bridged nipt^2- ligands alternately linked three Ln^3+ and five metal ions(three Ln^3+ and two Cu^2+ ions) to generate a 2D heterometallic framework with 3,3,4,5-connected (3.4.5)(3^2.4^2.5.6^3.72)(4^2.6^3.8)(4^2.6) topology. In Cu4Tb2,μ2-bridged and μ4-bridged nipt2- ligands alternately connected two Tb3+ and four metal ions(two Tb^3+ and two Cu^2+ ions) by carboxylating into a corrugated heterometallic 2D layer with 3-connected (63) topology. The magnetic properties of Cu2Pr2 and Cu2Eu2 were also discussed, the results show tliat both CPs have a weak antimagnetic interaction. Moreover, the near-iiifrared luminescence properties of Cu2Pr2 and Cu2Eu2 were also studied.
基金the National Natural Science Foundation of China(51703120)Natural Science Foundation of Fujian Province(2021J011117)+1 种基金Education and Research Project of Fujian Province(JAT200640,B202031)Innovation and Entrepreneurship Training Program for College Students(202111311017)。
