Four new rare earth solid complexes with 2,6-pyridinedicarboxylic acid and triphenylphosphine oxide were synthesized for the first time.Their structures and properties have been studied by means of elemental analysis,...Four new rare earth solid complexes with 2,6-pyridinedicarboxylic acid and triphenylphosphine oxide were synthesized for the first time.Their structures and properties have been studied by means of elemental analysis,complexometric titrations,IR,TG-DTA and molar conductivity,and the composition of these complexes can be represented as [RE2(L1)3(L2)(H2O)2]·nH2O(RE=Sm,Eu,Tb,Dy;L1 = 2,6-pyridinedicarboxylic acid;L2 = triphenylphosphine oxide).The fluorescence spectra of them have been determined and they all show the characteristic fluorescent properties of the central ions(Sm3+,Eu 3+,Tb3+,Dy3+).展开更多
由1,4-二碘代苯出发,经过两步Sonogashira偶联反应合成标题化合物2-甲基-4-(4-(吡啶-4-乙炔基)苯基)-3-丁炔-2-醇。通过1 H NMR、13 C NMR核磁共振、X射线单晶衍射等手段对化合物的结构进行了表征。结果表明,该化合物属于单斜晶系,空间...由1,4-二碘代苯出发,经过两步Sonogashira偶联反应合成标题化合物2-甲基-4-(4-(吡啶-4-乙炔基)苯基)-3-丁炔-2-醇。通过1 H NMR、13 C NMR核磁共振、X射线单晶衍射等手段对化合物的结构进行了表征。结果表明,该化合物属于单斜晶系,空间群为P2(1)2(1)2(1)。晶体学参数:a=0.060754(15)nm,b=0.081700(19)nm,c=0.32073(7)nm,α=90.00°,β=90.00°,γ=90.00°,V=15.920(7)nm3,Z=8。展开更多
文摘Four new rare earth solid complexes with 2,6-pyridinedicarboxylic acid and triphenylphosphine oxide were synthesized for the first time.Their structures and properties have been studied by means of elemental analysis,complexometric titrations,IR,TG-DTA and molar conductivity,and the composition of these complexes can be represented as [RE2(L1)3(L2)(H2O)2]·nH2O(RE=Sm,Eu,Tb,Dy;L1 = 2,6-pyridinedicarboxylic acid;L2 = triphenylphosphine oxide).The fluorescence spectra of them have been determined and they all show the characteristic fluorescent properties of the central ions(Sm3+,Eu 3+,Tb3+,Dy3+).
文摘由1,4-二碘代苯出发,经过两步Sonogashira偶联反应合成标题化合物2-甲基-4-(4-(吡啶-4-乙炔基)苯基)-3-丁炔-2-醇。通过1 H NMR、13 C NMR核磁共振、X射线单晶衍射等手段对化合物的结构进行了表征。结果表明,该化合物属于单斜晶系,空间群为P2(1)2(1)2(1)。晶体学参数:a=0.060754(15)nm,b=0.081700(19)nm,c=0.32073(7)nm,α=90.00°,β=90.00°,γ=90.00°,V=15.920(7)nm3,Z=8。
