A novel dimer tungstovanadate, (H 3O) 4[VW 12 O 40 Na(H 2O) 4] 2, was hydrothermally synthesized and structurally characterized by single crystal X ray diffraction, IR spectra, TGA DSC thermal analysis...A novel dimer tungstovanadate, (H 3O) 4[VW 12 O 40 Na(H 2O) 4] 2, was hydrothermally synthesized and structurally characterized by single crystal X ray diffraction, IR spectra, TGA DSC thermal analysis and polarograpy. The yellowish crystal crystallized in the triclinic system, space group P1, a =1 464 5(3) nm, b =1 468 6(3) nm, c =1 411 1(3) nm, α=111 82(2)°, β=93 17(3)°, γ=117 47(3)°, V =2 210 6(8) nm 3, Z=1, D c=4 552 g·cm -3 , λ (Mo Kα )=0 071 073 nm, μ =31 402 mm -1 , F(000)=2 648, R =0 078 0. The title compound consists of two Keggin structure units linked together with two hydrated sodium cations to form a dimer with a porous structure with the pore dimension of 0 766 nm×0 778 5 nm. [WT5FZ]展开更多
The complex [(ButC5H’4)2YbCl]2, crystallized in the triclinic system,space group P1, with a=8. 392(3), b=9. 402(3), c=12. 418(5) , a=68. 78(3),P= 77. 43(3), γ=86. 41 (3)°, V= 891. 4(5) , Z=1, Dc= 1. 68 g/cm3, M...The complex [(ButC5H’4)2YbCl]2, crystallized in the triclinic system,space group P1, with a=8. 392(3), b=9. 402(3), c=12. 418(5) , a=68. 78(3),P= 77. 43(3), γ=86. 41 (3)°, V= 891. 4(5) , Z=1, Dc= 1. 68 g/cm3, Mr=901. 79, λ=0. 71069, F(000) = 464, μ= 56. 49 cm-1. T= 298 K. Final R=0.073, Rw= 0.081 for 2214 reflections with I> 3σ(I0). The molecule has a dimerstructure with two asymmetrical chlorine bridges. Two Bu5C5H4 and two chlorineatoms around the central atom Yb form a distorted tetrahedral geometry.展开更多
The complex K_8H_5 [La (SiW_2Mo_9O_(39))_2(H_2O)_(17)]4H_2O,M_r =4601. 4, crystallizes in the monoclinic space group P2_1/n with cell dimensions: α=17. 485 (5), b=27. 096(6), c=21. 462(5), β= 104. 79(2)°, V=991...The complex K_8H_5 [La (SiW_2Mo_9O_(39))_2(H_2O)_(17)]4H_2O,M_r =4601. 4, crystallizes in the monoclinic space group P2_1/n with cell dimensions: α=17. 485 (5), b=27. 096(6), c=21. 462(5), β= 104. 79(2)°, V=9913(4) A￣3, Z=4, D_c=3. 08 g/cm￣3, λ(MOKα)=0. 71069 A, μ=80. 04 cm￣(-1), F(000) =8512, T=183 K, R=0.086 for 6295 observed reflections. In the crystal the atoms W and Mo are distributed statistically with the occupancies of 0. 181 and 0. 819 respectively.展开更多
基金Supported financially by the Key laboratory of Inorganic Hydrothermal Synthesis of Jilin University
文摘A novel dimer tungstovanadate, (H 3O) 4[VW 12 O 40 Na(H 2O) 4] 2, was hydrothermally synthesized and structurally characterized by single crystal X ray diffraction, IR spectra, TGA DSC thermal analysis and polarograpy. The yellowish crystal crystallized in the triclinic system, space group P1, a =1 464 5(3) nm, b =1 468 6(3) nm, c =1 411 1(3) nm, α=111 82(2)°, β=93 17(3)°, γ=117 47(3)°, V =2 210 6(8) nm 3, Z=1, D c=4 552 g·cm -3 , λ (Mo Kα )=0 071 073 nm, μ =31 402 mm -1 , F(000)=2 648, R =0 078 0. The title compound consists of two Keggin structure units linked together with two hydrated sodium cations to form a dimer with a porous structure with the pore dimension of 0 766 nm×0 778 5 nm. [WT5FZ]
文摘The complex [(ButC5H’4)2YbCl]2, crystallized in the triclinic system,space group P1, with a=8. 392(3), b=9. 402(3), c=12. 418(5) , a=68. 78(3),P= 77. 43(3), γ=86. 41 (3)°, V= 891. 4(5) , Z=1, Dc= 1. 68 g/cm3, Mr=901. 79, λ=0. 71069, F(000) = 464, μ= 56. 49 cm-1. T= 298 K. Final R=0.073, Rw= 0.081 for 2214 reflections with I> 3σ(I0). The molecule has a dimerstructure with two asymmetrical chlorine bridges. Two Bu5C5H4 and two chlorineatoms around the central atom Yb form a distorted tetrahedral geometry.
文摘K6H7 [Dy(SiMo6W5O39)2] 10H2O, Mr= 4878. 5, is triclinic, sapcegroup P1 with a= 22. 697(5) A; b= 12. 835(4) A; c= 18. 216(6) A; a= 90. 56(2); β= 98. 24(2); γ= 90. 51 (2)°；V= 5251 (2) A3； Z= 2, Dc= 3.08 g/cm3; F(000) = 4321; S = 1. 550, μ= 183.65 cm-1. Refinement resulted in a final R of0.091, based on 7816 with I>3δ independent renections. The structure contains discrete [Dy (SiW5Mo6O39) 2] 13 - anions. The orientations fo the W and Mo atoms are random in the crystal. The MO6 octahedron and SiO4 tetrahedron are somewhat distorted.
文摘The complex K_8H_5 [La (SiW_2Mo_9O_(39))_2(H_2O)_(17)]4H_2O,M_r =4601. 4, crystallizes in the monoclinic space group P2_1/n with cell dimensions: α=17. 485 (5), b=27. 096(6), c=21. 462(5), β= 104. 79(2)°, V=9913(4) A￣3, Z=4, D_c=3. 08 g/cm￣3, λ(MOKα)=0. 71069 A, μ=80. 04 cm￣(-1), F(000) =8512, T=183 K, R=0.086 for 6295 observed reflections. In the crystal the atoms W and Mo are distributed statistically with the occupancies of 0. 181 and 0. 819 respectively.
