The title complex, \[La(btec) 1/2 (H 2 btec) 1/2 [KG*6](H 2 O)\] n n (H 4 btec=1,2,4,5 benzenetetracarboxylic acid) (1) was synthesized by the hydrothermal reaction of 1,2,4,5 be...The title complex, \[La(btec) 1/2 (H 2 btec) 1/2 [KG*6](H 2 O)\] n n (H 4 btec=1,2,4,5 benzenetetracarboxylic acid) (1) was synthesized by the hydrothermal reaction of 1,2,4,5 benzenetetracarboxylic dianhydride with La(NO 3 ) 3 ·6H 2 O in H 2 O, and crystallizes in the triclinic system, space group P 1 with a = 0.64403(3) nm, b = 0.94500(4) nm, c = 0.96380(5) nm, α = 88.535(2)°, β = 100.314(2)°, γ = 76.6470(10)° , V = 1.60968(10) nm 3 , Z =2, and final R = 0.0274 , R w = 0.0735. In 1, each La(III) ion is coordinated by eight oxygen atoms from six carboxylate groups and one coordinated water molecule. Two different coordination modes of H 4 btec were present in the structure, one of which contains two protonated carboxylate groups to balance the charge.展开更多
Self-assembly of Zn（NO3）2·6H2O and 2,3,5,6-tetrabromoterephthalic acid（H2TBTA） gave rise to two new zinc metal-organic frameworks,Zn（HTBTA）2（phen）2·H2O（1） and Zn（TBTA）1/2（μ2-OH）（H2O）·0....Self-assembly of Zn（NO3）2·6H2O and 2,3,5,6-tetrabromoterephthalic acid（H2TBTA） gave rise to two new zinc metal-organic frameworks,Zn（HTBTA）2（phen）2·H2O（1） and Zn（TBTA）1/2（μ2-OH）（H2O）·0.25EtOH（2）.Complex 1 is a mononuclear molecule.The hydrogen bonding interactions further connect the mononuclear molecules to generate a 2D supramolecular architecture.Complex 2 is a 2D organic-inorganic hybrid layer framework constructed from 1D rod-shaped secondary building units.展开更多
Solvent dependent assembly obtained two novel Ni coordination polymers with H_2 tbtpa and flexible 1,2-bix ligand（H_2tbtpa = tetrabromoterephthalic acid and 1,2-bix = 1,2-bis（imidazol-1-ylmethyl）benzene）,formulate...Solvent dependent assembly obtained two novel Ni coordination polymers with H_2 tbtpa and flexible 1,2-bix ligand（H_2tbtpa = tetrabromoterephthalic acid and 1,2-bix = 1,2-bis（imidazol-1-ylmethyl）benzene）,formulated as [Ni_（0.5）（tbtpa）_（0.5）（1,2-bix）·（H_2O）]_n（1） and [Ni（tbtpa）（1,2-bix）（H_2O）_2]_n（2）.They have been structurally characterized by single-crystal and powder X-ray diffraction,elemental analysis,FT-IR spectra and TGA.Compound 1 crystalizes in triclinic,space group P1 with a = 9.0276（4）,b = 10.0012（6）,c = 11.4955（5） A,α = 69.121（5）,β = 76.398（4）,γ = 89.668（4）o,C_（36）H_（32）Br_4 Ni N_8O_6,Mr = 1051.04,V = 939.05（8） A^3,Z = 1,Dc = 1.859 g·cm^-3,μ = 6.222 mm^-1,F（000） = 520,8.502≤2θ≤134.16°,λ（Cu Kα） = 1.54184 A,T = 294（6） K,the final R = 0.0750,w R = 0.1988 and S = 1.033.Compound 2 crystalizes in triclinic,space group P1 with a = 11.1257（7）,b = 11.5062（6）,c = 12.3529（4） A,α = 88.861（3）,β = 84.572（4）,γ = 64.235（6）o,C_（22）H_（18）Br_4 Ni N_4O_6,Mr = 812.75,V = 1417.36（1） A^3,Z = 2,Dc = 1.904 g·cm^-3,μ = 7.968 mm^-1,F（000） = 788,7.2≤2θ≤134.1°,λ（Cu Kα） = 1.54184 A,T = 294（6） K,the final R = 0.0414,w R = 0.0865 and S = 1.025.1 shows a two-dimensional（4,4）-sql topology and 2 manifests a three-dimensional 6~58 Cd SO_4 topology coordination polymer network.展开更多
Three indium metal-organic frameworks （In-MOFs）, [In（BTB）（2,2＇-bipy）]？NMP （1）, [In（BTB）（2,2＇-bipy）]？NMP？2H2O （2）, and [In（BTB）（NMP）]·0.5NMP （3）, have been constructed by the solvothermal ...Three indium metal-organic frameworks （In-MOFs）, [In（BTB）（2,2＇-bipy）]？NMP （1）, [In（BTB）（2,2＇-bipy）]？NMP？2H2O （2）, and [In（BTB）（NMP）]·0.5NMP （3）, have been constructed by the solvothermal reaction of In（NO3）3·5H2O and 1,3,5-benzenetribenzoic acid （H3BTB） in similar reaction conditions, and characterized by single-crystal X-ray crystallography, power X-ray diffraction （PXRD）, infrared spectroscopy （IR）, elemental analysis （EA） and thermogravimetry analysis （TGA）. Complex 1 bears a two-dimensional （2D） layered structure of 6,3-connected hcb net topology, and complexes 2 and 3 have 2-fold interpenetrating structures based on 6,3-connected layer, which display the same net topologies with the C3-symmetric H3BTB ligands as 3-connected linkers and the In（Ⅲ） ions as 6-connected nodes. Moreover, the fluorescent properties of 1～3 have also been studied.展开更多
The mononuclear complex [Ag(C6H6NCl)2](ClO() has been prepared and structurally analyzed by single-crystal X-ray diffraction. The complex crystallizes in the monoclinic system, space group C2/c with unit cell paramete...The mononuclear complex [Ag(C6H6NCl)2](ClO() has been prepared and structurally analyzed by single-crystal X-ray diffraction. The complex crystallizes in the monoclinic system, space group C2/c with unit cell parameters: a=15.5314(2), b=8.0247(8), c=15.3701(2)?.β=118.832(2)°, V=1678.2(3)?3, Z=4, Mr=462.46, Dc=1.830Mg/m3, F(000)=912, μ(MoKα) = 1.694cm-1. The final R and wR are 0.0472 and 0.1272 for 1484 observed reflections with I≥3σ(I). The Ag atom is coordinated by two nitrogen atoms of 4-chloromethyl-pyridine in a linear coordination geometry. Each molecule is further linked by the weak interaction between the Cl and Ag atoms to form a one-dimensional chain structure with Ag－Cl distance of 3.240?.展开更多
Hydrothermal reaction of 1,2,4-benzenetricarboxylic acid, and MnCl24H2O with 1,10-phenanthroline gave the title complex, [Mn(phen)(m-phth)]n, which crystallizes in the monoclinic system, space group P2/c with a=0.8358...Hydrothermal reaction of 1,2,4-benzenetricarboxylic acid, and MnCl24H2O with 1,10-phenanthroline gave the title complex, [Mn(phen)(m-phth)]n, which crystallizes in the monoclinic system, space group P2/c with a=0.83582(3) nm, b=1.04246(4) nm, c=1.87777(7) nm, =100.314(2), V=1.60968(10) nm3, Z=4, and the final R=0.0576, wR=0.1294. In the complex, each Mn(II) ion is coordinated to four O atoms of carboxylate groups and two N atoms of phen. Isophthalate was generated in situ through the loss of one carboxylate group of 1,2,4-benzenetricarboxylic acid under the hydrothermal condition. Each isophthalate is bound to three manganese atoms through O atoms of carboxylate in bridging and chelating fashion, affording manganese(II) pairs that are linked by the isophthalate group to yield a zig-zag chain along the c-axis.展开更多
A new silver(I) coordination polymer, [Ag(hmt)(fma) 1/2 ·2H 2O] n (1), (hmt=hexamethylenetetramine, fma=furmaric acid), was obtained by self assembly of hmt, fma and AgNO 3 in the mixed solvent of met...A new silver(I) coordination polymer, [Ag(hmt)(fma) 1/2 ·2H 2O] n (1), (hmt=hexamethylenetetramine, fma=furmaric acid), was obtained by self assembly of hmt, fma and AgNO 3 in the mixed solvent of methanol, dichloromethane and water (CH 3OH∶CH 2Cl 2∶H 2O=5∶5∶1), and characterized by X ray diffraction analysis. Complex 1 belongs to orthorhombic space group Pbcn with cell parameters a =1 72043(5) nm, b = 1 19704(2) nm, c =1 11685(3) nm, V =2 30007(10) nm 3, Z =8, CCDC number: 194381. In complex 1, each hmt ligand acts as a μ 3 bridge to link three Ag(I) atoms and in turn every Ag(I) ion attaches to three hmt ligands to produce a 2D honeycomb network, which is further linked by the bidentate fma ligands to form a 3D noninterpenetrating open framework with one dimensional channels being filled by guest molecules.展开更多
Metal chalcogenide compounds can be used as high-performance cathodes for aqueous Zn batteries.However,the low accessible surfaces and violent volumetric expansion limit their properties and applications.To address th...Metal chalcogenide compounds can be used as high-performance cathodes for aqueous Zn batteries.However,the low accessible surfaces and violent volumetric expansion limit their properties and applications.To address these,phase-engineering strategies coupled with a hollow structure were applied to regulate the adsorption/desorption of OH−on the electrode surface and enhance the electrochemical performance.In this study,using a Se@C nanorod template,a series of carbon nanotube(CNT)-supported nickel selenides,including cubic NiSe_(2),NiSe_(2)/Ni_(0.85)Se composites,and hexagonal Ni_(0.85)Se,were synthesized through an in situ selenylation process for the first time.Due to the large specific surface,high porosity,and hollow carbon skeleton,the optimized NiSe_(2)/Ni_(0.85)Se/CNT has a high specific capacity of 616 Cg^(−1),excellent rate capability,and stable cycling performance.In addition,its inside Faradic mechanism was investigated using a series of ex situ characterizations and density functional theory calculations.Thus,the fabricated Ni//Zn battery presents a high energy density of 311.4 W h kg^(−1) at 3485 W kg^(−1) and long cycling life.This study offers an ingenious strategy for designing nickel selenide electrodes and deeper perception for its Faradic mechanism in alkaline Zn battery.展开更多
A three-dimensional（3D） barium complex with 1,3,5-benzenetricarboxylic acid（H3BTC）, {[Ba1.5（BTC）（H2O）]·（H2O）}n（1）, was synthesized in DMF/EtOH/H2O mixed solution under solvothermal conditions, and cha...A three-dimensional（3D） barium complex with 1,3,5-benzenetricarboxylic acid（H3BTC）, {[Ba1.5（BTC）（H2O）]·（H2O）}n（1）, was synthesized in DMF/EtOH/H2O mixed solution under solvothermal conditions, and characterized by single-crystal X-ray diffraction, elemental analyses, IR spectra, thermogravimetric analyses, and photoluminescence measurement. In complex 1, the 2D I2O0 type inorganic layer is constructed by {Ba1O10} and {Ba2O9} polyhedra. Moreover, the solid-state fluorescence measurement reveals a fluorescence emission band at 465 nm under 344 nm excitation, assigned to a charge-transfer transition.展开更多
基金theNationalNaturalScienceFoundationofChina (No .2 990 10 0 5 )
文摘The title complex, \[La(btec) 1/2 (H 2 btec) 1/2 [KG*6](H 2 O)\] n n (H 4 btec=1,2,4,5 benzenetetracarboxylic acid) (1) was synthesized by the hydrothermal reaction of 1,2,4,5 benzenetetracarboxylic dianhydride with La(NO 3 ) 3 ·6H 2 O in H 2 O, and crystallizes in the triclinic system, space group P 1 with a = 0.64403(3) nm, b = 0.94500(4) nm, c = 0.96380(5) nm, α = 88.535(2)°, β = 100.314(2)°, γ = 76.6470(10)° , V = 1.60968(10) nm 3 , Z =2, and final R = 0.0274 , R w = 0.0735. In 1, each La(III) ion is coordinated by eight oxygen atoms from six carboxylate groups and one coordinated water molecule. Two different coordination modes of H 4 btec were present in the structure, one of which contains two protonated carboxylate groups to balance the charge.
基金Supported by the NNSFC (20701025)the NSF of Shandong Province (Y2008B01),and Shandong University
文摘Self-assembly of Zn（NO3）2·6H2O and 2,3,5,6-tetrabromoterephthalic acid（H2TBTA） gave rise to two new zinc metal-organic frameworks,Zn（HTBTA）2（phen）2·H2O（1） and Zn（TBTA）1/2（μ2-OH）（H2O）·0.25EtOH（2）.Complex 1 is a mononuclear molecule.The hydrogen bonding interactions further connect the mononuclear molecules to generate a 2D supramolecular architecture.Complex 2 is a 2D organic-inorganic hybrid layer framework constructed from 1D rod-shaped secondary building units.
基金Supported by the National Natural Science Foundation of China(NSFC)(No.21271117)National Students'Innovation and Entrepreneurship Training Program(201410425060)
文摘Solvent dependent assembly obtained two novel Ni coordination polymers with H_2 tbtpa and flexible 1,2-bix ligand（H_2tbtpa = tetrabromoterephthalic acid and 1,2-bix = 1,2-bis（imidazol-1-ylmethyl）benzene）,formulated as [Ni_（0.5）（tbtpa）_（0.5）（1,2-bix）·（H_2O）]_n（1） and [Ni（tbtpa）（1,2-bix）（H_2O）_2]_n（2）.They have been structurally characterized by single-crystal and powder X-ray diffraction,elemental analysis,FT-IR spectra and TGA.Compound 1 crystalizes in triclinic,space group P1 with a = 9.0276（4）,b = 10.0012（6）,c = 11.4955（5） A,α = 69.121（5）,β = 76.398（4）,γ = 89.668（4）o,C_（36）H_（32）Br_4 Ni N_8O_6,Mr = 1051.04,V = 939.05（8） A^3,Z = 1,Dc = 1.859 g·cm^-3,μ = 6.222 mm^-1,F（000） = 520,8.502≤2θ≤134.16°,λ（Cu Kα） = 1.54184 A,T = 294（6） K,the final R = 0.0750,w R = 0.1988 and S = 1.033.Compound 2 crystalizes in triclinic,space group P1 with a = 11.1257（7）,b = 11.5062（6）,c = 12.3529（4） A,α = 88.861（3）,β = 84.572（4）,γ = 64.235（6）o,C_（22）H_（18）Br_4 Ni N_4O_6,Mr = 812.75,V = 1417.36（1） A^3,Z = 2,Dc = 1.904 g·cm^-3,μ = 7.968 mm^-1,F（000） = 788,7.2≤2θ≤134.1°,λ（Cu Kα） = 1.54184 A,T = 294（6） K,the final R = 0.0414,w R = 0.0865 and S = 1.025.1 shows a two-dimensional（4,4）-sql topology and 2 manifests a three-dimensional 6~58 Cd SO_4 topology coordination polymer network.
基金Supported by the National Natural Science Foundation of China(No.21371179,21201179)the Fundamental Research Funds for the Central Universities(14CX02213A,16CX05015A)the Foundation of State Key Laboratory of Structural Chemistry(20150026,20160006)
文摘Three indium metal-organic frameworks （In-MOFs）, [In（BTB）（2,2＇-bipy）]？NMP （1）, [In（BTB）（2,2＇-bipy）]？NMP？2H2O （2）, and [In（BTB）（NMP）]·0.5NMP （3）, have been constructed by the solvothermal reaction of In（NO3）3·5H2O and 1,3,5-benzenetribenzoic acid （H3BTB） in similar reaction conditions, and characterized by single-crystal X-ray crystallography, power X-ray diffraction （PXRD）, infrared spectroscopy （IR）, elemental analysis （EA） and thermogravimetry analysis （TGA）. Complex 1 bears a two-dimensional （2D） layered structure of 6,3-connected hcb net topology, and complexes 2 and 3 have 2-fold interpenetrating structures based on 6,3-connected layer, which display the same net topologies with the C3-symmetric H3BTB ligands as 3-connected linkers and the In（Ⅲ） ions as 6-connected nodes. Moreover, the fluorescent properties of 1～3 have also been studied.
文摘The mononuclear complex [Ag(C6H6NCl)2](ClO() has been prepared and structurally analyzed by single-crystal X-ray diffraction. The complex crystallizes in the monoclinic system, space group C2/c with unit cell parameters: a=15.5314(2), b=8.0247(8), c=15.3701(2)?.β=118.832(2)°, V=1678.2(3)?3, Z=4, Mr=462.46, Dc=1.830Mg/m3, F(000)=912, μ(MoKα) = 1.694cm-1. The final R and wR are 0.0472 and 0.1272 for 1484 observed reflections with I≥3σ(I). The Ag atom is coordinated by two nitrogen atoms of 4-chloromethyl-pyridine in a linear coordination geometry. Each molecule is further linked by the weak interaction between the Cl and Ag atoms to form a one-dimensional chain structure with Ag－Cl distance of 3.240?.
基金Project supported by the National Natural Science Foundation of China (No. 90206040).
文摘Hydrothermal reaction of 1,2,4-benzenetricarboxylic acid, and MnCl24H2O with 1,10-phenanthroline gave the title complex, [Mn(phen)(m-phth)]n, which crystallizes in the monoclinic system, space group P2/c with a=0.83582(3) nm, b=1.04246(4) nm, c=1.87777(7) nm, =100.314(2), V=1.60968(10) nm3, Z=4, and the final R=0.0576, wR=0.1294. In the complex, each Mn(II) ion is coordinated to four O atoms of carboxylate groups and two N atoms of phen. Isophthalate was generated in situ through the loss of one carboxylate group of 1,2,4-benzenetricarboxylic acid under the hydrothermal condition. Each isophthalate is bound to three manganese atoms through O atoms of carboxylate in bridging and chelating fashion, affording manganese(II) pairs that are linked by the isophthalate group to yield a zig-zag chain along the c-axis.
基金ProjectsupportedbytheNationalNaturalScienceFoundationofChina (No .2 990 10 0 5 )
文摘A new silver(I) coordination polymer, [Ag(hmt)(fma) 1/2 ·2H 2O] n (1), (hmt=hexamethylenetetramine, fma=furmaric acid), was obtained by self assembly of hmt, fma and AgNO 3 in the mixed solvent of methanol, dichloromethane and water (CH 3OH∶CH 2Cl 2∶H 2O=5∶5∶1), and characterized by X ray diffraction analysis. Complex 1 belongs to orthorhombic space group Pbcn with cell parameters a =1 72043(5) nm, b = 1 19704(2) nm, c =1 11685(3) nm, V =2 30007(10) nm 3, Z =8, CCDC number: 194381. In complex 1, each hmt ligand acts as a μ 3 bridge to link three Ag(I) atoms and in turn every Ag(I) ion attaches to three hmt ligands to produce a 2D honeycomb network, which is further linked by the bidentate fma ligands to form a 3D noninterpenetrating open framework with one dimensional channels being filled by guest molecules.
基金supported by the National Natural Science Foundation of China(21875285,22001265)Taishan Scholar Foundation(ts201511019)+2 种基金the Key Research and Development Projects of Shandong Province(2019JZZY010331)the Fundamental Research Funds for the Central Universities(19CX05001A)the Natural Science Foundation of Shandong Province(ZR2020QB028)。
文摘Metal chalcogenide compounds can be used as high-performance cathodes for aqueous Zn batteries.However,the low accessible surfaces and violent volumetric expansion limit their properties and applications.To address these,phase-engineering strategies coupled with a hollow structure were applied to regulate the adsorption/desorption of OH−on the electrode surface and enhance the electrochemical performance.In this study,using a Se@C nanorod template,a series of carbon nanotube(CNT)-supported nickel selenides,including cubic NiSe_(2),NiSe_(2)/Ni_(0.85)Se composites,and hexagonal Ni_(0.85)Se,were synthesized through an in situ selenylation process for the first time.Due to the large specific surface,high porosity,and hollow carbon skeleton,the optimized NiSe_(2)/Ni_(0.85)Se/CNT has a high specific capacity of 616 Cg^(−1),excellent rate capability,and stable cycling performance.In addition,its inside Faradic mechanism was investigated using a series of ex situ characterizations and density functional theory calculations.Thus,the fabricated Ni//Zn battery presents a high energy density of 311.4 W h kg^(−1) at 3485 W kg^(−1) and long cycling life.This study offers an ingenious strategy for designing nickel selenide electrodes and deeper perception for its Faradic mechanism in alkaline Zn battery.
基金Supported by the Fundamental Research Funds for the Central Universities(13CX02006A,14CX02158A)the scientific research foundation of Shandong province Outstanding Young Scientist Award(BS2011CL041)Natural Science Foundation of Shandong Province(ZR2010BL011)
文摘A three-dimensional（3D） barium complex with 1,3,5-benzenetricarboxylic acid（H3BTC）, {[Ba1.5（BTC）（H2O）]·（H2O）}n（1）, was synthesized in DMF/EtOH/H2O mixed solution under solvothermal conditions, and characterized by single-crystal X-ray diffraction, elemental analyses, IR spectra, thermogravimetric analyses, and photoluminescence measurement. In complex 1, the 2D I2O0 type inorganic layer is constructed by {Ba1O10} and {Ba2O9} polyhedra. Moreover, the solid-state fluorescence measurement reveals a fluorescence emission band at 465 nm under 344 nm excitation, assigned to a charge-transfer transition.
