机构地区: 汕头大学理学院化学系
出 处: 《化学学报》 2003年第6期853-857,共5页
摘 要: 测定了三个三元体系LaX3 PIAP H2 O (X-=ClO-4,NO-3 ,Cl-,PIAP为 4 (邻苯二甲酰基 )亚氨基安替比林 )在 3 0℃时的溶解度 .研究发现La(NO3 ) 3 PIAP H2 O和LaCl3 PIAP H2 O体系均为简单共饱型 ;La(ClO4) 3 PIAP H2 O体系有一个新固相形成 ,其组成为La(PIAP) 3 (ClO4) 3 ·4H2 O ,是不一致溶解化合物 .参考La(ClO4) 3 PIAP H2 O体系的相平衡研究结果 ,合成了相应的镧系配合物Ln(PIAP) 3 (ClO4) 3 ·4H2 O (Ln =La ,Pr ,Nd ,Sm ,Gd ,Yb) ,通过化学分析、元素分析、TG DTG、IR光谱和密度对化合物进行了表征 . The solubilities of three ternary systems LaX 3 PIAP H 2O (X -=ClO - 4, NO - 3, Cl -; PIAP=phthalimidoantipyrine, C 19 H 15 N 3O 3) were determined at 30 ℃. It is discovered that the systems La(NO 3) 3 PIAP H 2O and LaCl 3 PIAP H 2O are simple eutonic type, while the system La(ClO 4) 3 PIAP H 2O contains a new solid phase, the composition of which is La(PIAP) 3(ClO 4) 3·4H 2O that is an incongruent compound. Based on the phase equilibrium of the system La(ClO 4) 3 PIAP H 2O, the corresponding lanthanide complexes Ln(PIAP) 3(ClO 4) 3·4H 2O (Ln=La, Pr, Nd, Sm, Gd, Yb) were synthesized and characterized by chemical analysis, elemental analysis, TG DTG, IR spectra and density.