N,N′-双(2-羟基苯基)草酸二酰胺与稀土元素配合物的合成及表征

Synthesis and Characterization of Complexes of N,N′-Bis(2-Hydroxy phenyl) Oxamide with Rare Earths

报道了N ,N′ 双 (2 羟基苯基 )草酸二酰胺 (简称H4hpox)与稀土元素 3种类型 8个配合物的合成 ,经IR、UV、摩尔电导、元素分析、TG DTA等方法对配合物进行了表征。确定了这些配合物的组成为 :(1)M2 L(OH) 2 ·2H2 O(M =La3 + ,Gd3 + ) ;(2 )M3 L2 ·nH2 O(M =Nd3 + <n =7>,Er3 + <n =9>,Yb3 + <n =3>) ;(3)ML(OH) (H2 O)·nH2 O(M=Sm3 + <n =2 >,Tm3 + <n =1>,Lu3 + <n =0 >)。

Eight complexes of rare earths with N,N′ bis(2 hydroxy phenyl) oxamide(abbreviated as H 4hpox) were synthesized. The properties of the complexes are characterized by element analysis, IR, UV,TG DTA and molar conductance. The results show that H 4hpox can coordinate with rare earth ions. The composition of these complexes are: 1.M 2L(OH) 2·2H 2O(M=La 3+ ,Gd 3+ );2. M 3L 2· n H 2O(M=Nd 3+ < n =7>,Er 3+ < n =9>,Yb 3+ < n =3>);3. ML(OH)(H 2O)· n H 2O(M=Sm 3+ < n =2>, Tm 3+ < n =1>,Lu 3+ < n =0>). The probable structures of the complexes are proposed.