The novel complex {[Co(bipy)(azpy)2(NCS)2]· H2O}n (where bipy=4,4′ bipyridine, azpy=4,4′ azobisp yridine) has been synthesized and characterized by elemental analyses, IR, UV, thermal analyses, and variable tem...The novel complex {[Co(bipy)(azpy)2(NCS)2]· H2O}n (where bipy=4,4′ bipyridine, azpy=4,4′ azobisp yridine) has been synthesized and characterized by elemental analyses, IR, UV, thermal analyses, and variable temperature magnetic susceptibility. The crystal (C32H26CoN12OS2, Mr=717.70) belongs to the orthorhombic, space group Pnna, a=2.21312(16)nm, b=1.40403(10)nm, c=1.14237(8)nm, V=3.5497(4)nm3, Z=4, Dc=1.343g· cm- 3, μ =0.645mm- 1, F(000)=1476, and final R1=0.0691, wR2=0.1129 for 231 parameters and 1674 observed reflections [I >2.00σ (I)]. The Co(Ⅱ) atom is, in a distorted octahedral geometry, coordinated by six nitrogen atoms from two bridging bipy, two monodentate azpy, and two thiocyanate groups. The bridging ligand bipy links Co(Ⅱ) atoms to form the infinite “ rod" with terminal coordination azpy ligand acting as sidearms. Unprecedented three parallel interpenetrating two dimensional (4,4) networks and novel infinite triple helices are formed via hydrogen bonding interactions. CCDC: 155588.展开更多
The Copper(Ⅰ) supramolecular complexes of 4,5-bis(methylthio)-1,3-dithiole-2-thione (C5H6S5), [Cu(C5H6S5)(SCN)]∞ 1 and [Cu(C5H6S5)I]∞ 2, have been prepared and characterized. X-ray structure analysis for complex 1 ...The Copper(Ⅰ) supramolecular complexes of 4,5-bis(methylthio)-1,3-dithiole-2-thione (C5H6S5), [Cu(C5H6S5)(SCN)]∞ 1 and [Cu(C5H6S5)I]∞ 2, have been prepared and characterized. X-ray structure analysis for complex 1 reveals that the infinite chain structure with polymeric stairs of different lengths is formed through the coordination mode (μ3) of the thiocyanate bridges. The shorter interchain S...S contacts give rise to a three-dimensional network structure. CCDC: 215668.展开更多
The compleo (H 2 O) 4 (3,3’-azpy)(3,3’-azpy) 3 (PF 6 )2 n (3,3’-azpy =3,3’-azobispyridine)has been synthesized and characterized.The crystal(C 40 H 40 F 12 CoN 16 O 4 P 2 ,M r =1157.75)belongs to the triclinic sys...The compleo (H 2 O) 4 (3,3’-azpy)(3,3’-azpy) 3 (PF 6 )2 n (3,3’-azpy =3,3’-azobispyridine)has been synthesized and characterized.The crystal(C 40 H 40 F 12 CoN 16 O 4 P 2 ,M r =1157.75)belongs to the triclinic system,space groupP1with the following crystallographi c parameters:a=10.759(2),b=11.012(2),c=23.207(4)?;α=85.330(10),β=83.470(10),γ=69.770(10)°;V=2560.6(8)? 3 ,D c =1.502g·cm -3 ,μ(Mo Kα)=0.498mm -1 ,F(000)=1178,Z =2,and final R 1 =0.0469,w R 2 =0.1053for observed reflections 5549(I>2.00σ(I)).The X-ray analysis reveals that cob alt?cation coordination environment is a distorted octahedral geometry,the Co 2+ ion is coordinated by four oxygen ato ms of water in the equatorial plane,while the two nitrogen atoms of 3,3’-azpy occupy the axial positions.The complex forms a one-di mensional chain structure via3,3’-azpy bridging ligand.The one-dimension al chain forms three-dimensional network by hydrogen bonds andπ-πinter-actions.展开更多
Under hydrothermal conditions, the reaction of UO2(NO3)2·6H2O with ligand 4-cyanopyridine N-oxide in the presence of NaN3 affords one complex, {[(POTZ)2(H2O)3(UO2)](H2O) (1) (POTZ=4-tetrazolyl pyridine N-oxide), ...Under hydrothermal conditions, the reaction of UO2(NO3)2·6H2O with ligand 4-cyanopyridine N-oxide in the presence of NaN3 affords one complex, {[(POTZ)2(H2O)3(UO2)](H2O) (1) (POTZ=4-tetrazolyl pyridine N-oxide), which is another example of a pyridine N-oxide complex of uranium and exhibit strong green fluorescent emission at room temperature. The structure was determined by single crystal X-ray diffraction. Crystal data: P21/m, a=0.664 16(10) nm, b=2.104 1(3) nm, c=0.683 29(10) nm, β=93.295(3)°, V=0.953 3(2) nm3, Z=2, R1=0.033 7, wR2=0.083 3. CCDC: 241841.展开更多
A new coordination polyme[Co (imbz)2(H2O)2]n[imbz =4’-(imidazol-1-ylmethyl)benzoate anion]was synthesized and characterized b y x-ray crystallography.The title c omplex crystallizes in monoclinic,space group P21/c,a=...A new coordination polyme[Co (imbz)2(H2O)2]n[imbz =4’-(imidazol-1-ylmethyl)benzoate anion]was synthesized and characterized b y x-ray crystallography.The title c omplex crystallizes in monoclinic,space group P21/c,a=10.910(2),b=8.8720(18),c=11.252(2)?,β=92.20(3)°,V=1088.3(4)?3,Z =2,Dc=1.518g·cm-3,μ=0.836cm -1,F(000)=514,R=0.0679,w R=0.1710.Each Co ?atom has a distorted octahedral coordination geometry and is six-coord-inated by two water molecules and fou r imbz ligands.Each imbz ligand connects two Co ?to gen-erate an infinite 1D twisted chain structure.展开更多
Under hydrothermal conditions,homochiral ligand(4aR,8aR)-2,3-di(thiophen-2-yl)-decahydroquinoxaline (DTDCQ) reacted with CuBr to give 1D helical chain complexes[(DTHHQ)CuBr]_n(1).Single crystal X-ray determination sho...Under hydrothermal conditions,homochiral ligand(4aR,8aR)-2,3-di(thiophen-2-yl)-decahydroquinoxaline (DTDCQ) reacted with CuBr to give 1D helical chain complexes[(DTHHQ)CuBr]_n(1).Single crystal X-ray determination shows that compound 1 crystallize in chiral space groups P2_12_12_1 and the experimental result indicated that 1 has SHG(second harmonic generation) active with approximate responses 0.4 times that of urea,Fluorescent analysis showed it exhibits one intense emission band at 377 nm when the exciting radiation was set at 340 nm. Dielectric constant of compound 1 were measured at different frequencies at room temperature.展开更多
The two mixed ligand complexes, cis [Ru(mnt)(bpy)2] (1) and cis [Ru (dmit)(bpy)2] (2) (where mnt2- is maleonitriledithiolate and dmit2- reprents 4,5 dimercapto 1,3 dithiole 2 thione), have been synthesized and charact...The two mixed ligand complexes, cis [Ru(mnt)(bpy)2] (1) and cis [Ru (dmit)(bpy)2] (2) (where mnt2- is maleonitriledithiolate and dmit2- reprents 4,5 dimercapto 1,3 dithiole 2 thione), have been synthesized and characterized by element analysis and IR spectra. The electronic spectra of 1 and 2 in DMF solutions showed that the two complexes have broad absorption charge transfer bands [LMCT i.e. charge transfer from dithiolate to Ru? or LL′CT, that is, charge transfer from dithiolate to 2,2′ bipyridine] in the visible region. Compared with 1, the LMCT or LL′CT band for 2 shifts to low frequency. The results of electrochemistry of the two complexes in DMF are consistent with that of the electronic spectra.展开更多
文摘The novel complex {[Co(bipy)(azpy)2(NCS)2]· H2O}n (where bipy=4,4′ bipyridine, azpy=4,4′ azobisp yridine) has been synthesized and characterized by elemental analyses, IR, UV, thermal analyses, and variable temperature magnetic susceptibility. The crystal (C32H26CoN12OS2, Mr=717.70) belongs to the orthorhombic, space group Pnna, a=2.21312(16)nm, b=1.40403(10)nm, c=1.14237(8)nm, V=3.5497(4)nm3, Z=4, Dc=1.343g· cm- 3, μ =0.645mm- 1, F(000)=1476, and final R1=0.0691, wR2=0.1129 for 231 parameters and 1674 observed reflections [I >2.00σ (I)]. The Co(Ⅱ) atom is, in a distorted octahedral geometry, coordinated by six nitrogen atoms from two bridging bipy, two monodentate azpy, and two thiocyanate groups. The bridging ligand bipy links Co(Ⅱ) atoms to form the infinite “ rod" with terminal coordination azpy ligand acting as sidearms. Unprecedented three parallel interpenetrating two dimensional (4,4) networks and novel infinite triple helices are formed via hydrogen bonding interactions. CCDC: 155588.
文摘The Copper(Ⅰ) supramolecular complexes of 4,5-bis(methylthio)-1,3-dithiole-2-thione (C5H6S5), [Cu(C5H6S5)(SCN)]∞ 1 and [Cu(C5H6S5)I]∞ 2, have been prepared and characterized. X-ray structure analysis for complex 1 reveals that the infinite chain structure with polymeric stairs of different lengths is formed through the coordination mode (μ3) of the thiocyanate bridges. The shorter interchain S...S contacts give rise to a three-dimensional network structure. CCDC: 215668.
文摘The compleo (H 2 O) 4 (3,3’-azpy)(3,3’-azpy) 3 (PF 6 )2 n (3,3’-azpy =3,3’-azobispyridine)has been synthesized and characterized.The crystal(C 40 H 40 F 12 CoN 16 O 4 P 2 ,M r =1157.75)belongs to the triclinic system,space groupP1with the following crystallographi c parameters:a=10.759(2),b=11.012(2),c=23.207(4)?;α=85.330(10),β=83.470(10),γ=69.770(10)°;V=2560.6(8)? 3 ,D c =1.502g·cm -3 ,μ(Mo Kα)=0.498mm -1 ,F(000)=1178,Z =2,and final R 1 =0.0469,w R 2 =0.1053for observed reflections 5549(I>2.00σ(I)).The X-ray analysis reveals that cob alt?cation coordination environment is a distorted octahedral geometry,the Co 2+ ion is coordinated by four oxygen ato ms of water in the equatorial plane,while the two nitrogen atoms of 3,3’-azpy occupy the axial positions.The complex forms a one-di mensional chain structure via3,3’-azpy bridging ligand.The one-dimension al chain forms three-dimensional network by hydrogen bonds andπ-πinter-actions.
文摘Under hydrothermal conditions, the reaction of UO2(NO3)2·6H2O with ligand 4-cyanopyridine N-oxide in the presence of NaN3 affords one complex, {[(POTZ)2(H2O)3(UO2)](H2O) (1) (POTZ=4-tetrazolyl pyridine N-oxide), which is another example of a pyridine N-oxide complex of uranium and exhibit strong green fluorescent emission at room temperature. The structure was determined by single crystal X-ray diffraction. Crystal data: P21/m, a=0.664 16(10) nm, b=2.104 1(3) nm, c=0.683 29(10) nm, β=93.295(3)°, V=0.953 3(2) nm3, Z=2, R1=0.033 7, wR2=0.083 3. CCDC: 241841.
文摘A new coordination polyme[Co (imbz)2(H2O)2]n[imbz =4’-(imidazol-1-ylmethyl)benzoate anion]was synthesized and characterized b y x-ray crystallography.The title c omplex crystallizes in monoclinic,space group P21/c,a=10.910(2),b=8.8720(18),c=11.252(2)?,β=92.20(3)°,V=1088.3(4)?3,Z =2,Dc=1.518g·cm-3,μ=0.836cm -1,F(000)=514,R=0.0679,w R=0.1710.Each Co ?atom has a distorted octahedral coordination geometry and is six-coord-inated by two water molecules and fou r imbz ligands.Each imbz ligand connects two Co ?to gen-erate an infinite 1D twisted chain structure.
文摘Under hydrothermal conditions,homochiral ligand(4aR,8aR)-2,3-di(thiophen-2-yl)-decahydroquinoxaline (DTDCQ) reacted with CuBr to give 1D helical chain complexes[(DTHHQ)CuBr]_n(1).Single crystal X-ray determination shows that compound 1 crystallize in chiral space groups P2_12_12_1 and the experimental result indicated that 1 has SHG(second harmonic generation) active with approximate responses 0.4 times that of urea,Fluorescent analysis showed it exhibits one intense emission band at 377 nm when the exciting radiation was set at 340 nm. Dielectric constant of compound 1 were measured at different frequencies at room temperature.
文摘The two mixed ligand complexes, cis [Ru(mnt)(bpy)2] (1) and cis [Ru (dmit)(bpy)2] (2) (where mnt2- is maleonitriledithiolate and dmit2- reprents 4,5 dimercapto 1,3 dithiole 2 thione), have been synthesized and characterized by element analysis and IR spectra. The electronic spectra of 1 and 2 in DMF solutions showed that the two complexes have broad absorption charge transfer bands [LMCT i.e. charge transfer from dithiolate to Ru? or LL′CT, that is, charge transfer from dithiolate to 2,2′ bipyridine] in the visible region. Compared with 1, the LMCT or LL′CT band for 2 shifts to low frequency. The results of electrochemistry of the two complexes in DMF are consistent with that of the electronic spectra.
