Synthesis, Fluorescence and Magnetic Properties of a New Europium（Ⅲ） Complex Eu(C₁₄H₉O₃)₂(C₁₂H₈N₂)₂（NO₃）

【摘要】 A new europium（III）complex Eu(C₁₄H₉O₃)₂(C₁₂H₈N₂)₂（NO₃）has been synthesized with 2-benzoylbenzoic acid and 1,10-phenanthroline as ligands.Crystal data for the complex are as follows:monoclinic,space group P2₁/c,a=9.6733（6）,b=22.9521（14）,c=19.7701（12）?,β=94.9800（10）o,V=4372.8（5）?³,D_c=1.557 g/cm³,Z=4,μ（Mo Kα）=1.501 mm^-1,F（000）=2064,the final R=0.0214 and w R=0.0510.The Eu（III）ion is coordinated by ten atoms to give a bicapped square antiprism coordination geometry.The complex shows two intense fluorescence emission bands arising from the transitions of Eu³⁺:⁵D₀→⁷F₁（594 nm）and ⁵D₀→⁷F₂（618 nm）.In addition,its X_m T decreases from 1.29767 cm³?mol^-1?K at 300 K to 0.01531 cm³?mol^-1?K at 2 K.更多还原

【Abstract】 A new europium（III）complex Eu(C₁₄H₉O₃)₂(C₁₂H₈N₂)₂（NO₃）has been synthesized with 2-benzoylbenzoic acid and 1,10-phenanthroline as ligands.Crystal data for the complex are as follows:monoclinic,space group P2₁/c,a=9.6733（6）,b=22.9521（14）,c=19.7701（12）?,β=94.9800（10）o,V=4372.8（5）?³,D_c=1.557 g/cm³,Z=4,μ（Mo Kα）=1.501 mm^-1,F（000）=2064,the final R=0.0214 and w R=0.0510.The Eu（III）ion is coordinated by ten atoms to give a bicapped square antiprism coordination geometry.The complex shows two intense fluorescence emission bands arising from the transitions of Eu³⁺:⁵D₀→⁷F₁（594 nm）and ⁵D₀→⁷F₂（618 nm）.In addition,its X_m T decreases from 1.29767 cm³?mol^-1?K at 300 K to 0.01531 cm³?mol^-1?K at 2 K.更多还原