一个新双氮杂冠醚及其稀土硝酸盐配合物的合成表征  

Synthesis and Characteristics of Complexes of Some of Lanthanide(Ⅲ) Nitrates with a New Diaza-Crown Ether

作　　者：黄勇[1] 杨汝栋[1] 阎兰[1] 

机构地区：[1]兰州大学化学化工学院,甘肃兰州730000

出　　处：《中国稀土学报》2002年第z3期17-20,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金(2957103);教育部博士点基金(9575005)资助课题

摘　　要：合成了一个新的二十员大环双氮杂冠醚及其与稀土硝酸盐所形成的1∶2(M∶L)型配合物,并经过红外光谱,元素分析,摩尔电导,热分析及荧光光谱等方法表征。结果表明,配位是通过配体中的C-O-C进行的,而Ar-O-C未参与配位,同时含两分子配位水,对Sm3+,Eu3+,Tb3+,Dy3+的配合物进行了荧光光谱测定,均有较强的荧光强度,其中Tb(Ⅲ)配合物荧光强度最高。A new diaza crown ether: 2, 3, 16, 17dibenzo1,8,11,18tetraoxa5,14diazacycloOctadecane, and the 1∶2 (M∶L) complexes of Lanthanide nitrates with the diazatetraoxa 20membered macrocycle were synthesized in solid state. The complexes were characterized by IR spectra, elemental analysis, molar conductivity, and thermoanalysis. The results show that the coordination occurs by means of oxygen atoms for C-O-C, not from Ar-O-C, and each complex contains two coordination water molecules. The complexes of Sm(Ⅲ), Eu(Ⅲ), Tb(Ⅲ), Dy(Ⅲ) have strong luminescence intensity. That the complex of Tb(Ⅲ) has the strongest luminescence intensity shows that the new diaza crown ether′s triplet state energy matches with the Tb(Ⅲ) vibration energy level.

关 键 词：稀土 双氮杂冠醚 稀土硝酸盐 大环配合物 荧光性能 

分 类 号：O641.44[理学—物理化学] O614.33[理学—化学]