Two new europium-based metal-organic-frameworks （MOFs）, namely [NMen][Eu（m- BDC）2] （1） and [Eu3（p-BDC）4（ClO4）（H2O）4] （2）, have been synthesized and structurally characte- rized. Single-crystal X-ray diff...Two new europium-based metal-organic-frameworks （MOFs）, namely [NMen][Eu（m- BDC）2] （1） and [Eu3（p-BDC）4（ClO4）（H2O）4] （2）, have been synthesized and structurally characte- rized. Single-crystal X-ray diffraction studies reveal that 1 crystallizes in the monoclinic system, space group P21/n with a 2D layer structure, while 2 crystallizes in the orthorhombic system, space group Pccn with a 3D net structure. Both 1 and 2 have strong characteristic Eu（Ⅲ） emissions at visible red region and the quantum yields can reach up to 78.1 and 46.0%, respectively. The high luminescent efficiency may be attributed to the efficient energy transition from the ligands to the Eu（Ⅲ） center.展开更多
A new 2Fe2 S complex[（2-C5H4N）N（μ-CH2S）2Fe2（CO）6]（1） related to the active site of[FeFe]-hydrogenase was obtained by treating（HS）2Fe2（CO）6 with（pyridin-2-ylazanediyl）dimethanol.Protonation occurred at t...A new 2Fe2 S complex[（2-C5H4N）N（μ-CH2S）2Fe2（CO）6]（1） related to the active site of[FeFe]-hydrogenase was obtained by treating（HS）2Fe2（CO）6 with（pyridin-2-ylazanediyl）dimethanol.Protonation occurred at the pyridine nitrogen atom when two equivalents of HBF4·OEt2acid were added to the toluene solution of 1,leading to the formation of[（2-C5H4NH）N（μ-CH2S）2Fe2（CO）6]·BF4·OEt2（1H~＋）,whose molecular structure was further established by singlecrystal X-ray analysis.Complex 1 crystallizes in the monoclinic system,space group P21/n with α=7.728（3）,b = 11.825（4）,c = 17.888（6） A,β= 92.968（5）°,while complex 1H~＋ crystallizes in the triclinic system,space group P1 with a = 7.672（4）,b = 10.382（5）,c = 16.480（10） A,α=106.575（13）,β= 93.18（3）,γ=104.262（17）°.展开更多
Temperature dependent assembly of two novel Cd coordination polymers with the phen and H2MIP ligands （phen = 1,10-phenanthrolion and H2MIP = 5-methyl-isophthalic acid）, formulated as Cd2（MIP）2（phen）2 （1） and ...Temperature dependent assembly of two novel Cd coordination polymers with the phen and H2MIP ligands （phen = 1,10-phenanthrolion and H2MIP = 5-methyl-isophthalic acid）, formulated as Cd2（MIP）2（phen）2 （1） and Cd3（MIP）3（H2MIP）（phen）2 （2）. They have been structurally characterized by single-crystal X-ray diffraction, elemental analysis, FT-IR spectra and TGA. 1 crystallizes in the monoclinic space group P2/n, while 2 crystallizes in the triclinic space group P1. 1 shows a 2D （two-dimensional） plane and 2 shows a 1D （one-dimensional） chain. In addition, their solid-state luminescent properties have also been investigated.展开更多
The title compound biaquo (1.12-diaza-3, 4 : 9 . 10-dibenzos-5, 8-dioxacyclopentadecane-N-acetate) copper nitrate dihydrate. [Cu (C21H25O4N2) ( H2O)2].NO3·2H2O, Mr= 567. 05 . has been prepared. It crystallizes in...The title compound biaquo (1.12-diaza-3, 4 : 9 . 10-dibenzos-5, 8-dioxacyclopentadecane-N-acetate) copper nitrate dihydrate. [Cu (C21H25O4N2) ( H2O)2].NO3·2H2O, Mr= 567. 05 . has been prepared. It crystallizes in the monoclinic system. space group P21/a with a 12. 302(4) - b 13. 244(4), c= 15. 774(6)A . g=98. 59', V 2541 (l)\, Z 4. A(MoKα) = 0. 71069 A . D. l. 48 gcm-3. The structure was solved by direct methods with the final R 0. 060, R. 0. 081 for 3305observed reflections (I> 3a (I) ). The copper atom is surrounded by two nitrogen atoms and one oxygen atom from the carboxyl of the ligand and two oxygen atoms of coordinated water in a distorted square pyramidal arrangement. However, the two'ether oxygen atoms of the macrocyclic ligand are uncoordinated.展开更多
A new water-stable europium MOF,(Me_(2)NH_(2))[Eu(abtc)(phen)]·2H_(2)O (1),has been synthesized from Eu(NO_(3))_(3)·6H_(2)O with 1,10-phenanthroline (phen) and 3,3′,5,5′-azobenzenetetracarboxylic acid (H_4...A new water-stable europium MOF,(Me_(2)NH_(2))[Eu(abtc)(phen)]·2H_(2)O (1),has been synthesized from Eu(NO_(3))_(3)·6H_(2)O with 1,10-phenanthroline (phen) and 3,3′,5,5′-azobenzenetetracarboxylic acid (H_4abtc) ligands under solvothermal conditions and structurally characterized by single-crystal X-ray diffraction analysis,IR,TGA and PXRD.It crystallizes in monoclinic system,C2/c space group,with a=16.278(3),b=14.261(3),c=27.936(5)?,b=103.464(3)°,V=6307(2)A^(3),Z=8,C_(30)H_(26)Eu N_5O_(10),M_(r)=768.5,D_(c)=1.543 g/cm^(3),F(000)=2912,m(Mo Ka)=2.044 mm^(-1),R=0.0315 and w R=0.0663.In the structure of 1,the Eu O_7N_(2) polyhedra are assembled into a 2D layer with rhombic windows and these layers are further condensed to form a 3D framework.It can be used as selective and sensitive fluorescence sensors capable of detecting diethyl ether vapor.展开更多
基金supported by the National Basic Research Program of China(973 Program,2012CB821702)the National Natural Science Foundation of China(21233009 and 21173221)the State Key Laboratory of Structural Chemistry
文摘Two new europium-based metal-organic-frameworks （MOFs）, namely [NMen][Eu（m- BDC）2] （1） and [Eu3（p-BDC）4（ClO4）（H2O）4] （2）, have been synthesized and structurally characte- rized. Single-crystal X-ray diffraction studies reveal that 1 crystallizes in the monoclinic system, space group P21/n with a 2D layer structure, while 2 crystallizes in the orthorhombic system, space group Pccn with a 3D net structure. Both 1 and 2 have strong characteristic Eu（Ⅲ） emissions at visible red region and the quantum yields can reach up to 78.1 and 46.0%, respectively. The high luminescent efficiency may be attributed to the efficient energy transition from the ligands to the Eu（Ⅲ） center.
基金supported by the National Basic Research Program of China(973 Program2012CB821702)+1 种基金the National Natural Science Foundation of China(21233009 and 21173221)the State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences
文摘A new 2Fe2 S complex[（2-C5H4N）N（μ-CH2S）2Fe2（CO）6]（1） related to the active site of[FeFe]-hydrogenase was obtained by treating（HS）2Fe2（CO）6 with（pyridin-2-ylazanediyl）dimethanol.Protonation occurred at the pyridine nitrogen atom when two equivalents of HBF4·OEt2acid were added to the toluene solution of 1,leading to the formation of[（2-C5H4NH）N（μ-CH2S）2Fe2（CO）6]·BF4·OEt2（1H~＋）,whose molecular structure was further established by singlecrystal X-ray analysis.Complex 1 crystallizes in the monoclinic system,space group P21/n with α=7.728（3）,b = 11.825（4）,c = 17.888（6） A,β= 92.968（5）°,while complex 1H~＋ crystallizes in the triclinic system,space group P1 with a = 7.672（4）,b = 10.382（5）,c = 16.480（10） A,α=106.575（13）,β= 93.18（3）,γ=104.262（17）°.
基金supported by the National Basic Research Program of China(973 Program,2012CB821702)the National Natural Science Foundation of China(21233009 and 21173221)the State Key Laboratory of Structural Chemistry
文摘Temperature dependent assembly of two novel Cd coordination polymers with the phen and H2MIP ligands （phen = 1,10-phenanthrolion and H2MIP = 5-methyl-isophthalic acid）, formulated as Cd2（MIP）2（phen）2 （1） and Cd3（MIP）3（H2MIP）（phen）2 （2）. They have been structurally characterized by single-crystal X-ray diffraction, elemental analysis, FT-IR spectra and TGA. 1 crystallizes in the monoclinic space group P2/n, while 2 crystallizes in the triclinic space group P1. 1 shows a 2D （two-dimensional） plane and 2 shows a 1D （one-dimensional） chain. In addition, their solid-state luminescent properties have also been investigated.
文摘The title compound biaquo (1.12-diaza-3, 4 : 9 . 10-dibenzos-5, 8-dioxacyclopentadecane-N-acetate) copper nitrate dihydrate. [Cu (C21H25O4N2) ( H2O)2].NO3·2H2O, Mr= 567. 05 . has been prepared. It crystallizes in the monoclinic system. space group P21/a with a 12. 302(4) - b 13. 244(4), c= 15. 774(6)A . g=98. 59', V 2541 (l)\, Z 4. A(MoKα) = 0. 71069 A . D. l. 48 gcm-3. The structure was solved by direct methods with the final R 0. 060, R. 0. 081 for 3305observed reflections (I> 3a (I) ). The copper atom is surrounded by two nitrogen atoms and one oxygen atom from the carboxyl of the ligand and two oxygen atoms of coordinated water in a distorted square pyramidal arrangement. However, the two'ether oxygen atoms of the macrocyclic ligand are uncoordinated.
基金supported by the National Natural Science Foundation of China(21972060)。
文摘A new water-stable europium MOF,(Me_(2)NH_(2))[Eu(abtc)(phen)]·2H_(2)O (1),has been synthesized from Eu(NO_(3))_(3)·6H_(2)O with 1,10-phenanthroline (phen) and 3,3′,5,5′-azobenzenetetracarboxylic acid (H_4abtc) ligands under solvothermal conditions and structurally characterized by single-crystal X-ray diffraction analysis,IR,TGA and PXRD.It crystallizes in monoclinic system,C2/c space group,with a=16.278(3),b=14.261(3),c=27.936(5)?,b=103.464(3)°,V=6307(2)A^(3),Z=8,C_(30)H_(26)Eu N_5O_(10),M_(r)=768.5,D_(c)=1.543 g/cm^(3),F(000)=2912,m(Mo Ka)=2.044 mm^(-1),R=0.0315 and w R=0.0663.In the structure of 1,the Eu O_7N_(2) polyhedra are assembled into a 2D layer with rhombic windows and these layers are further condensed to form a 3D framework.It can be used as selective and sensitive fluorescence sensors capable of detecting diethyl ether vapor.
