Salicylaldehyde O,O dimethyl phosphoramidothioic and their complexes of copper(Ⅱ),nicke(Ⅱ) and Zinc(Ⅱ) were synthesized and characterized by elemental analysis,electronic absorption spectrum,IR and molar conductivi...Salicylaldehyde O,O dimethyl phosphoramidothioic and their complexes of copper(Ⅱ),nicke(Ⅱ) and Zinc(Ⅱ) were synthesized and characterized by elemental analysis,electronic absorption spectrum,IR and molar conductivity.The schiffbase ligand was further ascertained by 1HNMR spectra.The composition coordination state and possible structures in these compounds were given.The tests of biological activity showed that synthesized complexes have scavenging effect on superoxide free radical similar SOD enzyme and these compounds are effective chemicals to kill tetranychus bimaculatus.展开更多
A new metal-organic coordination polymer [Ni（oba）（mbix）（H2O）]n·n H2O（H2oba = 4,4‘-oxydibenzoic acid,mbix = 1,3-bis（imidazol-1-ylmethyl）-benzene） 1 has been hydrothermally synthesized and structurally c...A new metal-organic coordination polymer [Ni（oba）（mbix）（H2O）]n·n H2O（H2oba = 4,4‘-oxydibenzoic acid,mbix = 1,3-bis（imidazol-1-ylmethyl）-benzene） 1 has been hydrothermally synthesized and structurally characterized by elemental analysis,IR,TG,UV and single-crystal X-ray diffraction.Green crystals crystallize in the triclinic system,space group P1 with a = 10.1915（18）,b = 11.415（2）,c = 12.314（2）A,α = 74.263（3）,β = 84.545（2）,γ = 74.369（3）o,V = 1327.6（4） A,C28H26N4 Ni O7,Mr = 589.24,Dc = 1.474 g/cm3,F（000） = 612,Z = 2,μ（Mo Kα） = 0.786 mm-1,the final R = 0.0332 and w R = 0.0869 for 4622 observed reflections（I 〉 2σ（I））.The structure of 1 exhibits a one-dimensional chain-like structure.In addition,natural bond orbital（NBO） analysis was performed by the PBE0/LANL2 DZ method in Gaussian 03 Program.The calculation results show obvious covalent interaction between the coordinated atoms and Ni（Ⅱ） ion.展开更多
Searching for non-noble metal catalysts with high activities and low price is critical to the commercialization of methanol oxidation in the process of fuel cells.Herein,two new pseudo-isomeric Ni metal-organic framew...Searching for non-noble metal catalysts with high activities and low price is critical to the commercialization of methanol oxidation in the process of fuel cells.Herein,two new pseudo-isomeric Ni metal-organic frameworks(Ni-MOFs)(CTGU-17/CTGU-18)have been prepared with 1,4-naphthalenedi-carboxylate(H_(2)NDC),4,4’-dipyridyl amine(DPA)and Ni(ClO_(4))_(2)under hydrothermal condition.Each phase contains one water molecule,but differs dramatically in its bonding to the framework,resulting in different topological networks with fourfold interpenetrating 4-connected dia net(CTGU-17)and(3,7)-connected net(CTGU-18)and diverse electrocatalytic performance for methanol oxidation reaction(MOR).Remarkably,by combining each MOF with the conductive additive,acetylene black(AB),a composite material,AB&CTGU-18(2:4)was confirmed to have an excellent performance for MOR with a high mass specific peak current of 442.3 mA·mg^(-1).The enhanced electrocatalytic activities and robustness might be attributed to the synergetic effect of acetylene black and the active metal centers of MOFs particles for methanol oxidation.The present work would provide a new insight for the rational design of MOFs-based composites with enhanced methanol oxidation reaction performance.展开更多
文摘Salicylaldehyde O,O dimethyl phosphoramidothioic and their complexes of copper(Ⅱ),nicke(Ⅱ) and Zinc(Ⅱ) were synthesized and characterized by elemental analysis,electronic absorption spectrum,IR and molar conductivity.The schiffbase ligand was further ascertained by 1HNMR spectra.The composition coordination state and possible structures in these compounds were given.The tests of biological activity showed that synthesized complexes have scavenging effect on superoxide free radical similar SOD enzyme and these compounds are effective chemicals to kill tetranychus bimaculatus.
基金supported by the Science and Technology Development Project of Jilin Provincial Science&Technology Department(201205080)the Science and Technology Research Projects of the Education Office of Jilin Province(No.2013.384)
文摘A new metal-organic coordination polymer [Ni（oba）（mbix）（H2O）]n·n H2O（H2oba = 4,4‘-oxydibenzoic acid,mbix = 1,3-bis（imidazol-1-ylmethyl）-benzene） 1 has been hydrothermally synthesized and structurally characterized by elemental analysis,IR,TG,UV and single-crystal X-ray diffraction.Green crystals crystallize in the triclinic system,space group P1 with a = 10.1915（18）,b = 11.415（2）,c = 12.314（2）A,α = 74.263（3）,β = 84.545（2）,γ = 74.369（3）o,V = 1327.6（4） A,C28H26N4 Ni O7,Mr = 589.24,Dc = 1.474 g/cm3,F（000） = 612,Z = 2,μ（Mo Kα） = 0.786 mm-1,the final R = 0.0332 and w R = 0.0869 for 4622 observed reflections（I 〉 2σ（I））.The structure of 1 exhibits a one-dimensional chain-like structure.In addition,natural bond orbital（NBO） analysis was performed by the PBE0/LANL2 DZ method in Gaussian 03 Program.The calculation results show obvious covalent interaction between the coordinated atoms and Ni（Ⅱ） ion.
基金the National Natural Science Foundation of China(Nos.21971143,21673127,21671119,51572152 and 21805165)the Program of the Ministry of Education of China for Introducing Talents of Discipline to Universities(No.DT20015)Innovation Team of Young and Middle-aged Research(ITOYMR)in the Higher Education Institutions of Hubei Province(No.T201904)。
文摘Searching for non-noble metal catalysts with high activities and low price is critical to the commercialization of methanol oxidation in the process of fuel cells.Herein,two new pseudo-isomeric Ni metal-organic frameworks(Ni-MOFs)(CTGU-17/CTGU-18)have been prepared with 1,4-naphthalenedi-carboxylate(H_(2)NDC),4,4’-dipyridyl amine(DPA)and Ni(ClO_(4))_(2)under hydrothermal condition.Each phase contains one water molecule,but differs dramatically in its bonding to the framework,resulting in different topological networks with fourfold interpenetrating 4-connected dia net(CTGU-17)and(3,7)-connected net(CTGU-18)and diverse electrocatalytic performance for methanol oxidation reaction(MOR).Remarkably,by combining each MOF with the conductive additive,acetylene black(AB),a composite material,AB&CTGU-18(2:4)was confirmed to have an excellent performance for MOR with a high mass specific peak current of 442.3 mA·mg^(-1).The enhanced electrocatalytic activities and robustness might be attributed to the synergetic effect of acetylene black and the active metal centers of MOFs particles for methanol oxidation.The present work would provide a new insight for the rational design of MOFs-based composites with enhanced methanol oxidation reaction performance.
