Preparation and Properties of Rare Earth Complexes with 5-Phenyl Pyrazoline Dithioformate
来源期刊：JOURNAL OF RARE EARTHS2002年第2期
论文作者：谭民裕 章伟光 唐宁 吴建中 刘伟生 万霞
Key words：rare earths; complexes; 5-pheny1 pyrazoline dithioformate; preparation,properties;
Abstract: Nine complexes of rare earths with 5-phenyl pyrazoline dithioformate, Na[RE(S2CNC9H9N)4xH2O (RE=La～Dy, Y, except for Ce and Pm) were synthesized in dry N2 atmosphere and characterized by elemental analyses, molar conductance, IR spectra, thermal analyses. The results show that the ligands coordinate to the RE ion through two sulphur atom donors. Thermal analyses indicate that the thermal stability of the complex is not higher than that of sodium 5-phenyl pyrazoline dithioformate. The complexes are easily soluble in acetonitrile and tetrahydrofuran. The molar conductance values of the complexes measured in acetonitrile (1.24～1.32×10-3 mol*dm-3) at 25 ℃ are in the range of 86～104 Ω-1*cm2*mol-1, indicating that they are 1∶1 electrolytes.
谭民裕1，章伟光1，唐宁1，吴建中2，刘伟生1，万霞2
(1.Department of Chemistry, Lanzhou University, Lanzhou 730000, China;
2.Department of Chemistry, South China Normal University, Guangzhou 510631, China)
Abstract:Nine complexes of rare earths with 5-phenyl pyrazoline dithioformate, Na[RE(S2CNC9H9N)4xH2O (RE=La～Dy, Y, except for Ce and Pm) were synthesized in dry N2 atmosphere and characterized by elemental analyses, molar conductance, IR spectra, thermal analyses. The results show that the ligands coordinate to the RE ion through two sulphur atom donors. Thermal analyses indicate that the thermal stability of the complex is not higher than that of sodium 5-phenyl pyrazoline dithioformate. The complexes are easily soluble in acetonitrile and tetrahydrofuran. The molar conductance values of the complexes measured in acetonitrile (1.24～1.32×10-3 mol*dm-3) at 25 ℃ are in the range of 86～104 Ω-1*cm2*mol-1, indicating that they are 1∶1 electrolytes.
Key words:rare earths; complexes; 5-pheny1 pyrazoline dithioformate; preparation,properties;
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