A new five-heterocyclic-biphosphine-substituted Fe-only hydrogenase mimic,[（μ-pdt）Fe_2（CO）_5]_2（PTP）（1）,has been synthesized at room temperature. 1·H_2O crystallizes in triclinic system,space group P1,wi...A new five-heterocyclic-biphosphine-substituted Fe-only hydrogenase mimic,[（μ-pdt）Fe_2（CO）_5]_2（PTP）（1）,has been synthesized at room temperature. 1·H_2O crystallizes in triclinic system,space group P1,with a = 11.5897（4）,b = 13.6156（4）,c = 18.0333（6） ？,α = 76.306（3）,β = 72.742（3）,γ = 68.939（3）°,V = 2508.84（14） ？~3,Dc = 1.570 g/cm3,Z = 2,M_r = 1186.37,F（000） = 1204,the final R = 0.0748,and wR = 0.2012. In the tetranuclear complex 1·H_2O,each [2Fe_2S] butterfly unit is attached to one P atom of the diphosphine bridge and exhibits a square-pyramidal geometry. Complex 1 was characterized by elemental analysis,IR spectra,UV-vis absorption spectra,~1H-NMR and ^（31）P-NMR. The cyclic voltammetry behavior of compound 1 was investigated as well.展开更多
Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> crystalline ceramic was successfully synthesized through a soft chemical route at lower sintering temperature for analysis of photocatalyti...Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> crystalline ceramic was successfully synthesized through a soft chemical route at lower sintering temperature for analysis of photocatalytic behavior with respect to adsorption of Congo Red (CR) in the presence of UV-VIS irradiation. The single-phase formation of Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> ceramic was confirmed by powder X-ray diffraction studies and particle size observed by TEM analysis was found to be 148 ± 5 nm which reveals the crystalline nature of the materials. Additionally, the photocatalytic activity of Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> ceramic was evaluated by the degradation of Congo Red in presence of visible light. The optical band gap (Eg) of the synthesized materials was found to be 1.8 eV. It exhibited greater photocatalytic activity than other synthesized materials like BiFeO<sub>3</sub> as well as TiO<sub>2</sub> due to a smaller band gap (1.8 eV). Furthermore, process variables such as pH.展开更多
Quantitative reaction between copper（I） cyanide and triphenyl phosphite forms copper（I） complex [（P（OPh）3）gCug（CN）4] （1）. X-Ray crystal structure shows a catenarian polymer of tandem interconnected copper ...Quantitative reaction between copper（I） cyanide and triphenyl phosphite forms copper（I） complex [（P（OPh）3）gCug（CN）4] （1）. X-Ray crystal structure shows a catenarian polymer of tandem interconnected copper cyanide, with C and N connecting to proximal Cu atoms. The Cu atoms adopt two different conformations： one exhibits linear construction, while the other exhibits distorted tetrahedral geometry through coordinating to two cyano groups and the P donors of triphenyl phosphite molecules. The feature of 1 is the propagation pattern of two- and four-coordination along with the chain. IR and electronic absorption spectra also confirm the established single crystal structure. Thermal analysis indicates that 1 has a high thermal stability. 3-D fluorescence result shows the middle absorption peaks with the maximum excitement and emission wavelength 342 and 350 nm, respectively. Cyclic voltammogram in DMSO, DMF and MeCN gives a midpoint voltage of --0.003, 0.061 and 0.137 V versus SCE, respectively, showing the different solvent virtue on reduction potential.展开更多
基金supported by the NNSFC(Nos.21231003 and 21203195)
文摘A new five-heterocyclic-biphosphine-substituted Fe-only hydrogenase mimic,[（μ-pdt）Fe_2（CO）_5]_2（PTP）（1）,has been synthesized at room temperature. 1·H_2O crystallizes in triclinic system,space group P1,with a = 11.5897（4）,b = 13.6156（4）,c = 18.0333（6） ？,α = 76.306（3）,β = 72.742（3）,γ = 68.939（3）°,V = 2508.84（14） ？~3,Dc = 1.570 g/cm3,Z = 2,M_r = 1186.37,F（000） = 1204,the final R = 0.0748,and wR = 0.2012. In the tetranuclear complex 1·H_2O,each [2Fe_2S] butterfly unit is attached to one P atom of the diphosphine bridge and exhibits a square-pyramidal geometry. Complex 1 was characterized by elemental analysis,IR spectra,UV-vis absorption spectra,~1H-NMR and ^（31）P-NMR. The cyclic voltammetry behavior of compound 1 was investigated as well.
文摘Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> crystalline ceramic was successfully synthesized through a soft chemical route at lower sintering temperature for analysis of photocatalytic behavior with respect to adsorption of Congo Red (CR) in the presence of UV-VIS irradiation. The single-phase formation of Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> ceramic was confirmed by powder X-ray diffraction studies and particle size observed by TEM analysis was found to be 148 ± 5 nm which reveals the crystalline nature of the materials. Additionally, the photocatalytic activity of Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> ceramic was evaluated by the degradation of Congo Red in presence of visible light. The optical band gap (Eg) of the synthesized materials was found to be 1.8 eV. It exhibited greater photocatalytic activity than other synthesized materials like BiFeO<sub>3</sub> as well as TiO<sub>2</sub> due to a smaller band gap (1.8 eV). Furthermore, process variables such as pH.
文摘Quantitative reaction between copper（I） cyanide and triphenyl phosphite forms copper（I） complex [（P（OPh）3）gCug（CN）4] （1）. X-Ray crystal structure shows a catenarian polymer of tandem interconnected copper cyanide, with C and N connecting to proximal Cu atoms. The Cu atoms adopt two different conformations： one exhibits linear construction, while the other exhibits distorted tetrahedral geometry through coordinating to two cyano groups and the P donors of triphenyl phosphite molecules. The feature of 1 is the propagation pattern of two- and four-coordination along with the chain. IR and electronic absorption spectra also confirm the established single crystal structure. Thermal analysis indicates that 1 has a high thermal stability. 3-D fluorescence result shows the middle absorption peaks with the maximum excitement and emission wavelength 342 and 350 nm, respectively. Cyclic voltammogram in DMSO, DMF and MeCN gives a midpoint voltage of --0.003, 0.061 and 0.137 V versus SCE, respectively, showing the different solvent virtue on reduction potential.
