Three new crystalline compounds 1-3 were successfully obtained by the reactions of 3,3＇-dimethoxy-6,6＇-dimethyl-2,2＇-bipyridine ligand（dmbp） with the corresponding Cu（Ⅰ） salts.Crystal data for 1：orthorhombic ...Three new crystalline compounds 1-3 were successfully obtained by the reactions of 3,3＇-dimethoxy-6,6＇-dimethyl-2,2＇-bipyridine ligand（dmbp） with the corresponding Cu（Ⅰ） salts.Crystal data for 1：orthorhombic Pbca,a = 18.5858（12）,b = 8.1821（5）,c = 20.6066（13） ,V = 3133.7（3） 3,Z = 8,Dc = 1.843 g/cm3,F（000） = 1696,μ = 3.366 mm-1,the final R = 0.0223 and wR = 0.0542.Crystal data for 2：Orthorhombic Pbca,a = 18.7883（16）,b = 8.3249（7）,c = 19.0294（17） ,V = 2976.4（4） 3,Z = 8,Dc = 1.731 g/cm3,F（000） = 1552,μ = 4.154 mm-1,the final R = 0.0279 and wR = 0.0680.Crystal data for 3：monoclinic P21/c,a = 13.812（10）,b = 9.910（7）,c = 23.444（17） ,β = 104.3350（10）°,V = 3090（4） 3,Z = 4,Dc = 1.476 g/cm3,F（000） = 1408,μ = 1.588 mm-1,the final R = 0.0479 and wR = 0.1081.The results of X-ray crystallographic analysis revealed that C14H16ICuN2O2（1） and C14H16BrCuN2O2（2） are isostructural compounds with the dimers connected by C-H···halogen hydrogen bonds to generate a three-dimensional（3D） supramolecular network in 1 and a two-dimensional（2D） sheet structure in 2,respectively,while the mononuclear complex C28H32Cl2Cu2N4O4（3） is ionic.In 3,the [Cu（dmbp）2]＋ cations and [ClCuCl]-anions are connected by C-H···Cl hydrogen bonds to form a one-dimensional（1D） chain along the a axis.Therefore,in the three complexes,the C-H···halogen hydrogen bonds dominate their crystal structures.Additionally,The UV luminescent properties of complexes 1-3 were investigated.展开更多
A polynuclear complex [Cd（endc）（H20）]n·nH2O （endc = endo-norbornene-cis- 5,6-dicarboxylate anion） has been synthesized by the hydrothermal reaction of cadmium nitrate tetrahydrate with endo-norbornene-cis-5...A polynuclear complex [Cd（endc）（H20）]n·nH2O （endc = endo-norbornene-cis- 5,6-dicarboxylate anion） has been synthesized by the hydrothermal reaction of cadmium nitrate tetrahydrate with endo-norbornene-cis-5,6-dicarboxylic acid in 1：1 molar ratio, and structurally characterized by single-crystal X-ray diffraction. It crystallizes in monoclinic, space group P21/c with α = 1.16471（7）, b = 0.95334（7）, c = 0.91109（9） nm, Z= 4, V= 1.01035（14） nm^3, D, = 2.160 g/cm^3,μ = 2.172 mm^-1, F（000） = 648, R = 0.0302 and wR = 0.0752. According to structural analysis, each Cd（II） ion is coordinated to six O atoms from three endc anions and one water molecule, giving a distorted octahedral geometry. Two- dimensional layer arrangement of the title complex is constructed from the bridging nature of endc. It is worth notice that adjacent two-dimensional layers are joined together to form a three-dimensional supramolecular framework via intermolecular hydrogen bonding interactions.展开更多
RAJ S.Shanmuga Sundara FUN Hoong Kun (X ray Crystallography Unit, School of Physics, Universiti Sains Malaysia 11800 USM, Penang, Malaysia) The complex [Co(Im)6](Cin)2 (Im=imidazole,Cin=cinnamate) was prepared by reac...RAJ S.Shanmuga Sundara FUN Hoong Kun (X ray Crystallography Unit, School of Physics, Universiti Sains Malaysia 11800 USM, Penang, Malaysia) The complex [Co(Im)6](Cin)2 (Im=imidazole,Cin=cinnamate) was prepared by reaction of Co(PhCHCHCOO)2 with imidazole in ethanol. It has been determined by single crystal X ray analyses. The crystals are triclinic, space group , with a=9.7601(3),b=10.5935(3),c=11.3269(2)? ,α =69.948(1),β =71.027(1),γ =62.803(1)° , and Z=1. The crystal structure of the title complex consists of monomeric [Co(Im)6]2＋ cations and cinnamate anions in which the cobalt? ion assumes a centrosymmetric octahedral geometry with the CoN6 chromophore. In the solid state, the complex forms a three dimensional network through N－ H… O hydrogen bonds, the intermolecular hydrogen bonds connect the [Co(Im)6]2＋ cations and cinnamate anions.The cinnamate anions are nearly planar.展开更多
利用1,10-邻菲啰啉-5,6-二酮(phon)与二水合氯化铜反应得到了超分子配合物[Cu2(phon)2(μ2-Cl)2Cl2].DMF(1),并通过X射线单晶衍射、元素分析、红外光谱和紫外-可见光谱对它进行了表征。结果表明,配合物1中铜离子处于畸变的四方锥配位构...利用1,10-邻菲啰啉-5,6-二酮(phon)与二水合氯化铜反应得到了超分子配合物[Cu2(phon)2(μ2-Cl)2Cl2].DMF(1),并通过X射线单晶衍射、元素分析、红外光谱和紫外-可见光谱对它进行了表征。结果表明,配合物1中铜离子处于畸变的四方锥配位构型中,分子间通过C—H…Cl and C—H…O氢键和π-π堆积作用形成二维网络超分子结构。展开更多
By the study of absorption and fluorescence spectra and the lifetime of fluorescence at room and low temperatures of 2,6-dimethyl naphthalene dicarboxylate (DMN) in different concentrations of sulfuric acid, different...By the study of absorption and fluorescence spectra and the lifetime of fluorescence at room and low temperatures of 2,6-dimethyl naphthalene dicarboxylate (DMN) in different concentrations of sulfuric acid, different interactions between molecules of DMN and sulfuric acid have been observed. These interactions have been revealed by the absorption spectra of charge transfer complex in the ground state, emission of exciplex, absorption spectra of hydrogen bonding interaction, absorption and emission spectra after proton transfer and different lifetimes before and after protonation. The interaction mechanism of DMN and sulfuric acid through first the CT complex and exciplex then hydrogen bonding and finally proton transfer is proposed.展开更多
基金supported by the National Natural Science Foundation of China (No.20872057)
文摘Three new crystalline compounds 1-3 were successfully obtained by the reactions of 3,3＇-dimethoxy-6,6＇-dimethyl-2,2＇-bipyridine ligand（dmbp） with the corresponding Cu（Ⅰ） salts.Crystal data for 1：orthorhombic Pbca,a = 18.5858（12）,b = 8.1821（5）,c = 20.6066（13） ,V = 3133.7（3） 3,Z = 8,Dc = 1.843 g/cm3,F（000） = 1696,μ = 3.366 mm-1,the final R = 0.0223 and wR = 0.0542.Crystal data for 2：Orthorhombic Pbca,a = 18.7883（16）,b = 8.3249（7）,c = 19.0294（17） ,V = 2976.4（4） 3,Z = 8,Dc = 1.731 g/cm3,F（000） = 1552,μ = 4.154 mm-1,the final R = 0.0279 and wR = 0.0680.Crystal data for 3：monoclinic P21/c,a = 13.812（10）,b = 9.910（7）,c = 23.444（17） ,β = 104.3350（10）°,V = 3090（4） 3,Z = 4,Dc = 1.476 g/cm3,F（000） = 1408,μ = 1.588 mm-1,the final R = 0.0479 and wR = 0.1081.The results of X-ray crystallographic analysis revealed that C14H16ICuN2O2（1） and C14H16BrCuN2O2（2） are isostructural compounds with the dimers connected by C-H···halogen hydrogen bonds to generate a three-dimensional（3D） supramolecular network in 1 and a two-dimensional（2D） sheet structure in 2,respectively,while the mononuclear complex C28H32Cl2Cu2N4O4（3） is ionic.In 3,the [Cu（dmbp）2]＋ cations and [ClCuCl]-anions are connected by C-H···Cl hydrogen bonds to form a one-dimensional（1D） chain along the a axis.Therefore,in the three complexes,the C-H···halogen hydrogen bonds dominate their crystal structures.Additionally,The UV luminescent properties of complexes 1-3 were investigated.
基金This work was supported by the National Natural Science Foundation of China (No. 20571057)
文摘A polynuclear complex [Cd（endc）（H20）]n·nH2O （endc = endo-norbornene-cis- 5,6-dicarboxylate anion） has been synthesized by the hydrothermal reaction of cadmium nitrate tetrahydrate with endo-norbornene-cis-5,6-dicarboxylic acid in 1：1 molar ratio, and structurally characterized by single-crystal X-ray diffraction. It crystallizes in monoclinic, space group P21/c with α = 1.16471（7）, b = 0.95334（7）, c = 0.91109（9） nm, Z= 4, V= 1.01035（14） nm^3, D, = 2.160 g/cm^3,μ = 2.172 mm^-1, F（000） = 648, R = 0.0302 and wR = 0.0752. According to structural analysis, each Cd（II） ion is coordinated to six O atoms from three endc anions and one water molecule, giving a distorted octahedral geometry. Two- dimensional layer arrangement of the title complex is constructed from the bridging nature of endc. It is worth notice that adjacent two-dimensional layers are joined together to form a three-dimensional supramolecular framework via intermolecular hydrogen bonding interactions.
文摘RAJ S.Shanmuga Sundara FUN Hoong Kun (X ray Crystallography Unit, School of Physics, Universiti Sains Malaysia 11800 USM, Penang, Malaysia) The complex [Co(Im)6](Cin)2 (Im=imidazole,Cin=cinnamate) was prepared by reaction of Co(PhCHCHCOO)2 with imidazole in ethanol. It has been determined by single crystal X ray analyses. The crystals are triclinic, space group , with a=9.7601(3),b=10.5935(3),c=11.3269(2)? ,α =69.948(1),β =71.027(1),γ =62.803(1)° , and Z=1. The crystal structure of the title complex consists of monomeric [Co(Im)6]2＋ cations and cinnamate anions in which the cobalt? ion assumes a centrosymmetric octahedral geometry with the CoN6 chromophore. In the solid state, the complex forms a three dimensional network through N－ H… O hydrogen bonds, the intermolecular hydrogen bonds connect the [Co(Im)6]2＋ cations and cinnamate anions.The cinnamate anions are nearly planar.
文摘利用1,10-邻菲啰啉-5,6-二酮(phon)与二水合氯化铜反应得到了超分子配合物[Cu2(phon)2(μ2-Cl)2Cl2].DMF(1),并通过X射线单晶衍射、元素分析、红外光谱和紫外-可见光谱对它进行了表征。结果表明,配合物1中铜离子处于畸变的四方锥配位构型中,分子间通过C—H…Cl and C—H…O氢键和π-π堆积作用形成二维网络超分子结构。
基金Proiect supported by the National Natural Science Foundation of China.
文摘By the study of absorption and fluorescence spectra and the lifetime of fluorescence at room and low temperatures of 2,6-dimethyl naphthalene dicarboxylate (DMN) in different concentrations of sulfuric acid, different interactions between molecules of DMN and sulfuric acid have been observed. These interactions have been revealed by the absorption spectra of charge transfer complex in the ground state, emission of exciplex, absorption spectra of hydrogen bonding interaction, absorption and emission spectra after proton transfer and different lifetimes before and after protonation. The interaction mechanism of DMN and sulfuric acid through first the CT complex and exciplex then hydrogen bonding and finally proton transfer is proposed.
