A new strategy for the synthesis of polyoxometalate-based （POM-based） metal- organic materials was developed. The approach takes the advantage of the ability of phenanthroline derivative base to build strong noncova...A new strategy for the synthesis of polyoxometalate-based （POM-based） metal- organic materials was developed. The approach takes the advantage of the ability of phenanthroline derivative base to build strong noncovalent interactions. Three POM-based metal-organic com- pounds, [Mn（MOPIP）2（OH）2][Mn（MOPIP）2（OH）（SiW12O40）]·6H2O （1）, [Cu2（MOPIP）2（OH）2（H2O）]2-（SiW12O40）·5H2O （2） and [Co（Mo2O7）（MOPIP）]n （3） （MOPIP = 2-（4-methoxyphenyl）-1H-imida- zo[4,5-f][1,10]phenanthroline）, were synthesized under hydrothermal conditions. Single-crystal X-ray analysis reveals that compound 1 displays a mononuclear cluster. These clusters are intercon- nected by a framework of π…π stacking interactions to from a chain and layer structure. Compound 2 shows a multinuclear cluster with Keggin-type polyoxoanions [SiW12O40]^4- as building blocks. Strong hydrogen bonding interactions extend these multinuclear clusters into a two-dimensional layer. Compound 3 is a coordination polymer, in which [Mo2O7]^2- polyoxoanions connect the Co（II） ions running along the direction of one of the crystallographic axes to from a linear chain. Adjacent chains are further assembled into a two-dimensional network by strong hydrogen bonding interactions. The main structural traits in all of the compounds are that polyoxometalate acts as inorganic building blocks and connect metal ions to form cluster structure and coordination polymer. In addition, the photocatalytic activities and mechanism of compounds 1～3 on the degradation of Rhodamine B （RhB） under UV irradiation have been investigated in detail.展开更多
Two new three-dimensional coordination polymers, namely [Mn（L）（bpdc）]n（1）, [Mn（L）0.5（ndc）]n（2）（L = 1,4-bis（2-methylbenzimidazole）butane, H2 bpdc = 4,4＇-biphenyldicarboxylic acid, H2 ndc = 2,6-naphthale...Two new three-dimensional coordination polymers, namely [Mn（L）（bpdc）]n（1）, [Mn（L）0.5（ndc）]n（2）（L = 1,4-bis（2-methylbenzimidazole）butane, H2 bpdc = 4,4＇-biphenyldicarboxylic acid, H2 ndc = 2,6-naphthalenedicarboxylic acid） have been successfully synthesized under hydrothermal conditions. Two complexes were characterized by physico-chemical, spectroscopic methods and single-crystal X-ray diffraction. Complex 1 shows a 3D → 3D 5-fold interpenetrated network with a 4-connected uninodal dia topology. Complex 2 possesses a 3D → 3D 3-fold interpenetrating architecture with a binodal（4,5）-connected xah topology. The fluorescence and thermal properties of the title complexes were discussed.展开更多
基金supported by the National Natural Science Foundation of China(No.21507047)Postdoctoral Science Foundation of China(No.2015M571695)+1 种基金Postdoctoral Science Foundation of Jiangsu Province(No.1401176C)the Programs of Senior Talent Foundation of Jiangsu University(No.14JDG053)
文摘A new strategy for the synthesis of polyoxometalate-based （POM-based） metal- organic materials was developed. The approach takes the advantage of the ability of phenanthroline derivative base to build strong noncovalent interactions. Three POM-based metal-organic com- pounds, [Mn（MOPIP）2（OH）2][Mn（MOPIP）2（OH）（SiW12O40）]·6H2O （1）, [Cu2（MOPIP）2（OH）2（H2O）]2-（SiW12O40）·5H2O （2） and [Co（Mo2O7）（MOPIP）]n （3） （MOPIP = 2-（4-methoxyphenyl）-1H-imida- zo[4,5-f][1,10]phenanthroline）, were synthesized under hydrothermal conditions. Single-crystal X-ray analysis reveals that compound 1 displays a mononuclear cluster. These clusters are intercon- nected by a framework of π…π stacking interactions to from a chain and layer structure. Compound 2 shows a multinuclear cluster with Keggin-type polyoxoanions [SiW12O40]^4- as building blocks. Strong hydrogen bonding interactions extend these multinuclear clusters into a two-dimensional layer. Compound 3 is a coordination polymer, in which [Mo2O7]^2- polyoxoanions connect the Co（II） ions running along the direction of one of the crystallographic axes to from a linear chain. Adjacent chains are further assembled into a two-dimensional network by strong hydrogen bonding interactions. The main structural traits in all of the compounds are that polyoxometalate acts as inorganic building blocks and connect metal ions to form cluster structure and coordination polymer. In addition, the photocatalytic activities and mechanism of compounds 1～3 on the degradation of Rhodamine B （RhB） under UV irradiation have been investigated in detail.
基金Project supported by the National Natural Science Foundation of China(No.51474086)Natural Science Foundation-Steel and Iron Foundation of Hebei Province(B2015209299)
文摘Two new three-dimensional coordination polymers, namely [Mn（L）（bpdc）]n（1）, [Mn（L）0.5（ndc）]n（2）（L = 1,4-bis（2-methylbenzimidazole）butane, H2 bpdc = 4,4＇-biphenyldicarboxylic acid, H2 ndc = 2,6-naphthalenedicarboxylic acid） have been successfully synthesized under hydrothermal conditions. Two complexes were characterized by physico-chemical, spectroscopic methods and single-crystal X-ray diffraction. Complex 1 shows a 3D → 3D 5-fold interpenetrated network with a 4-connected uninodal dia topology. Complex 2 possesses a 3D → 3D 3-fold interpenetrating architecture with a binodal（4,5）-connected xah topology. The fluorescence and thermal properties of the title complexes were discussed.
