The state and dynandc behaviour of the Li+ ions in Li1+2.Ti2-x.Mgx P3O12 fast ionic conductor system have been investigated with 7Li solid-state NMR tectriques.Two activation energy of Li+ ions motion in the different...The state and dynandc behaviour of the Li+ ions in Li1+2.Ti2-x.Mgx P3O12 fast ionic conductor system have been investigated with 7Li solid-state NMR tectriques.Two activation energy of Li+ ions motion in the different temperature range and two mangnetic inequlvalent Li nuclei are indentilied from NMR results. The mechanism of Li+ ions transport in this system are discussed based on the temperatures dependence of Li NMR line shape and 7Li nucleus spin-lattice relaxation time T1.展开更多
The sodium positions in the doped NASICON solld solution Na3Zr2-xYxSi2-x .P1+xO12 system were investigated by using 23Na NMR techniques. The results of NMR indicats that the surroundings of the sodium cations in compo...The sodium positions in the doped NASICON solld solution Na3Zr2-xYxSi2-x .P1+xO12 system were investigated by using 23Na NMR techniques. The results of NMR indicats that the surroundings of the sodium cations in compounds with different compositions are different because the network structures are disordered by replacement of Y3+ for Zr4+ ions in the crystal structure. While the composition x is small, the sodiam cations locate at two sites, Na(1) and Na(2) sites, in the structure. With x increasing,the surroundings of the sodium cations change and the position of the sodium cations is of only one kind at x=1.2. These results are important for understanding the crystal rule and the effect of the doped cation on the surroundings of the sodium cations in Na3Zr2-xYxSi2-xP1+xO12 solid state solution system.展开更多
Two-dimensional 1H exchange spectroscopy was applied to study of the ligand exchange kinetics of the complex [Sn2(μ-OH)2C16(DMF)2]·4DMF in DMF-d7 solution. The exchange rate constants for the ligand H2O and DMF ...Two-dimensional 1H exchange spectroscopy was applied to study of the ligand exchange kinetics of the complex [Sn2(μ-OH)2C16(DMF)2]·4DMF in DMF-d7 solution. The exchange rate constants for the ligand H2O and DMF between free and coordination states were evaluated.展开更多
文摘The state and dynandc behaviour of the Li+ ions in Li1+2.Ti2-x.Mgx P3O12 fast ionic conductor system have been investigated with 7Li solid-state NMR tectriques.Two activation energy of Li+ ions motion in the different temperature range and two mangnetic inequlvalent Li nuclei are indentilied from NMR results. The mechanism of Li+ ions transport in this system are discussed based on the temperatures dependence of Li NMR line shape and 7Li nucleus spin-lattice relaxation time T1.
文摘The sodium positions in the doped NASICON solld solution Na3Zr2-xYxSi2-x .P1+xO12 system were investigated by using 23Na NMR techniques. The results of NMR indicats that the surroundings of the sodium cations in compounds with different compositions are different because the network structures are disordered by replacement of Y3+ for Zr4+ ions in the crystal structure. While the composition x is small, the sodiam cations locate at two sites, Na(1) and Na(2) sites, in the structure. With x increasing,the surroundings of the sodium cations change and the position of the sodium cations is of only one kind at x=1.2. These results are important for understanding the crystal rule and the effect of the doped cation on the surroundings of the sodium cations in Na3Zr2-xYxSi2-xP1+xO12 solid state solution system.
文摘Two-dimensional 1H exchange spectroscopy was applied to study of the ligand exchange kinetics of the complex [Sn2(μ-OH)2C16(DMF)2]·4DMF in DMF-d7 solution. The exchange rate constants for the ligand H2O and DMF between free and coordination states were evaluated.
