The new room-temperature molten salt was prepared based on LiTFSI[LiNC(SO 2CF 3) 2] with OZO(C 3H 5NO 2) which were not reported in literature. Its thermal and electrochemical properties were studied by differential s...The new room-temperature molten salt was prepared based on LiTFSI[LiNC(SO 2CF 3) 2] with OZO(C 3H 5NO 2) which were not reported in literature. Its thermal and electrochemical properties were studied by differential scanning calorimetry, ac impedance spectroscopy and cyclic voltammertry respectively. The results indicated that the structure symmetry of the molecule was depressed and the extent of charges delocalization was expanded, because of introducing oxygen atom of differential electronegativity in OZO molecule. DSC analysis showed that the LiTFSI-OZO molten salt has the excellent thermal stability and its eutectic temperature is below about 223.15 K. Meanwhile, the conductivity of LiTFSI-OZO molten salt at a molar ratio of 1∶4.5 is 0.75×10 -3 S/cm at 298.15 K and 3.50×10 -3 S/cm at 333.15 K. CV analysis showed that the electrochemical window of the sample is about 4 V.展开更多
A novel one-dimensional chain complex [Zn(dafo)2(H2O)2](NO3)2 was synthesized. It has been characterized by IR, UV, TGA, Elemental analysis and X-ray diffraction analysis. The crystal belongs to triclinic system, P1 s...A novel one-dimensional chain complex [Zn(dafo)2(H2O)2](NO3)2 was synthesized. It has been characterized by IR, UV, TGA, Elemental analysis and X-ray diffraction analysis. The crystal belongs to triclinic system, P1 space group. The Crystallographic data are: a = 0.702 7(14) nm, b = 0.828 95(17) nm, c = 10.225(2) nm, α = 95.02(3)°, β = 91.45(3)°, γ = 99.85(3)°. The crystal structure data indicate that the Zn(Ⅱ) ion was coordinated with the four nitrogen atoms of two dafo and two oxygen atoms of two coordination water molecules, respectively. The complex has a one-dimensional chain structure, which is formed by hydrogen bonds.展开更多
A new compound [Cu（AFO）2（N3）2]（DMF）（H2O）（AFO=4,5-diazafluorene-9-one）was synthesized.Its structure was determined by single X-ray diffraction.The crystal belongs to monoclinic system,space group C2/c.The cry...A new compound [Cu（AFO）2（N3）2]（DMF）（H2O）（AFO=4,5-diazafluorene-9-one）was synthesized.Its structure was determined by single X-ray diffraction.The crystal belongs to monoclinic system,space group C2/c.The crystallographic data,were determined a=1.2609（2）nm,b=0.8000（1）nm,c=2.6220（4）nm,β=109.964（6）°,V=2.4859（6）nm3,Z=4,F（000）=1236,Mr=603.07,Dc=1.611 Mg/m3,μ=0.937 nm-1,R1=0.0561,and wR2=0.1290.In the crystal Cu（II） atom is coordinated with four nitrogen from two AFO ligands and two nitrogen atoms from two azide ions to form an elonged-octahedron geometry.展开更多
文摘The new room-temperature molten salt was prepared based on LiTFSI[LiNC(SO 2CF 3) 2] with OZO(C 3H 5NO 2) which were not reported in literature. Its thermal and electrochemical properties were studied by differential scanning calorimetry, ac impedance spectroscopy and cyclic voltammertry respectively. The results indicated that the structure symmetry of the molecule was depressed and the extent of charges delocalization was expanded, because of introducing oxygen atom of differential electronegativity in OZO molecule. DSC analysis showed that the LiTFSI-OZO molten salt has the excellent thermal stability and its eutectic temperature is below about 223.15 K. Meanwhile, the conductivity of LiTFSI-OZO molten salt at a molar ratio of 1∶4.5 is 0.75×10 -3 S/cm at 298.15 K and 3.50×10 -3 S/cm at 333.15 K. CV analysis showed that the electrochemical window of the sample is about 4 V.
文摘A novel one-dimensional chain complex [Zn(dafo)2(H2O)2](NO3)2 was synthesized. It has been characterized by IR, UV, TGA, Elemental analysis and X-ray diffraction analysis. The crystal belongs to triclinic system, P1 space group. The Crystallographic data are: a = 0.702 7(14) nm, b = 0.828 95(17) nm, c = 10.225(2) nm, α = 95.02(3)°, β = 91.45(3)°, γ = 99.85(3)°. The crystal structure data indicate that the Zn(Ⅱ) ion was coordinated with the four nitrogen atoms of two dafo and two oxygen atoms of two coordination water molecules, respectively. The complex has a one-dimensional chain structure, which is formed by hydrogen bonds.
文摘A new compound [Cu（AFO）2（N3）2]（DMF）（H2O）（AFO=4,5-diazafluorene-9-one）was synthesized.Its structure was determined by single X-ray diffraction.The crystal belongs to monoclinic system,space group C2/c.The crystallographic data,were determined a=1.2609（2）nm,b=0.8000（1）nm,c=2.6220（4）nm,β=109.964（6）°,V=2.4859（6）nm3,Z=4,F（000）=1236,Mr=603.07,Dc=1.611 Mg/m3,μ=0.937 nm-1,R1=0.0561,and wR2=0.1290.In the crystal Cu（II） atom is coordinated with four nitrogen from two AFO ligands and two nitrogen atoms from two azide ions to form an elonged-octahedron geometry.
