A Hydrothermal reaction of MoO 3, NiCl 2·6H 2O, WO 3 and H 2O with a molar ratio of 1∶0.6∶1∶83.3 gives a rhombic-shaped black crystal [NiMo 12O 40H 10{Ni(H 2O) 3} 4]. It crystallizes in a tetragonal system wit...A Hydrothermal reaction of MoO 3, NiCl 2·6H 2O, WO 3 and H 2O with a molar ratio of 1∶0.6∶1∶83.3 gives a rhombic-shaped black crystal [NiMo 12O 40H 10{Ni(H 2O) 3} 4]. It crystallizes in a tetragonal system with space group I4 1/amd and unit cell parameters a=b=1.518 4(2) nm, c=3.082 9(6) nm, Z=4, V=7.108(2) nm 3, R=0.067 1, wR=0.217 8. The compound possesses a four-capped Keggin structure. The structure of the Keggin- [NiMo 12O 40H 10] 8- consists of twelve MoO 6 octahedrons and a NiO 4 tetrahedron on the center. Four [Ni(H 2O) 3] 2+ at the cap positions are linked to Keggin-structure by three μ 3-O, respectively. The calculation of bond valence shows that the oxidation state of Mo in the compound is +5.展开更多
A novel Co(II) coordination polymer bridged by 1,2,4,5-benzene-tetracarboxylate is solvothermally syn- thesized, which possesses one-dimensional chain structure. The complex crystallizes in the triclinic crystal syste...A novel Co(II) coordination polymer bridged by 1,2,4,5-benzene-tetracarboxylate is solvothermally syn- thesized, which possesses one-dimensional chain structure. The complex crystallizes in the triclinic crystal system, P1 space group, a = 0.9610(1) nm, b = 0.9684(1) nm, c = 0.7924(1) nm, α = 96.695(9)°, β = 102.741(6)°, γ = 116.551(5)°, V = 0.6236(2) nm3, Z = 2, R1 = 0.0342, wR2 = 0.0990. The surface photovoltage spectra measurement shows that the title com- plex exhibits obvious photovoltage response in the 300—800 nm regions. The variable temperature susceptibility reveals that the complex possesses weak antiferromagnetic property.展开更多
文摘A Hydrothermal reaction of MoO 3, NiCl 2·6H 2O, WO 3 and H 2O with a molar ratio of 1∶0.6∶1∶83.3 gives a rhombic-shaped black crystal [NiMo 12O 40H 10{Ni(H 2O) 3} 4]. It crystallizes in a tetragonal system with space group I4 1/amd and unit cell parameters a=b=1.518 4(2) nm, c=3.082 9(6) nm, Z=4, V=7.108(2) nm 3, R=0.067 1, wR=0.217 8. The compound possesses a four-capped Keggin structure. The structure of the Keggin- [NiMo 12O 40H 10] 8- consists of twelve MoO 6 octahedrons and a NiO 4 tetrahedron on the center. Four [Ni(H 2O) 3] 2+ at the cap positions are linked to Keggin-structure by three μ 3-O, respectively. The calculation of bond valence shows that the oxidation state of Mo in the compound is +5.
基金This work was supported by the grants from State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter+1 种基金 the Chinese Academy of Sciences (CAS) and the Science Foundation of CAS and Fujian province (2002F014,
文摘A novel Co(II) coordination polymer bridged by 1,2,4,5-benzene-tetracarboxylate is solvothermally syn- thesized, which possesses one-dimensional chain structure. The complex crystallizes in the triclinic crystal system, P1 space group, a = 0.9610(1) nm, b = 0.9684(1) nm, c = 0.7924(1) nm, α = 96.695(9)°, β = 102.741(6)°, γ = 116.551(5)°, V = 0.6236(2) nm3, Z = 2, R1 = 0.0342, wR2 = 0.0990. The surface photovoltage spectra measurement shows that the title com- plex exhibits obvious photovoltage response in the 300—800 nm regions. The variable temperature susceptibility reveals that the complex possesses weak antiferromagnetic property.
