摘要
用３硝基１，２，４三唑５酮（ＮＴＯ）的锂盐与稀土硝酸盐反应，制备ＮＴＯ镨、铕、镝、镱、钇五种配合物单晶。Ｘ射线衍射方法测定配合物的晶体结构。研究表明ＮＴＯ作为配体与稀土形成配合物时，表现出ＮＴＯ环上的羰基氧原子与稀土金属形成配位键的共性；配合物的空间结构随中心稀土离子半径的变化而变化，随着稀土离子半径的变小，较大体积配体ＮＴＯ－的配位数目逐渐变小。
H[Pr(NTO) 4(H 2O) 4]·2H 2O, [Eu(NTO) 3(H 2O) 6]·5H 2O, [Dy(NTO) 2(H 2O) 6]NTO·4H 2O, [Yb(NTO) 3(H 2O) 4]·6H 2O and [Y(NTO) 2NO 3(H 2O) 5]·2H 2O were prepared by mixing the aqueous solution of lithium 3 nitro 1,2,4 triazol 5 onate(LiNTO) and nitrate. The single crystal structure was determined by a four circle X ray diffractometer. When these complexes are formed by NTO and rare earths, the general character of complexes is that carbonyls of the NTO anion are coordinated to rare earth metals. The shorter the radii of rare earth get, the less the number of NTO - in complex becomes.
出处
《中国稀土学报》
CAS
CSCD
北大核心
1998年第3期267-269,共3页
Journal of the Chinese Society of Rare Earths
基金
陕西省自然科学基金
中国博士后科学基金
关键词
稀土
NTO
配合物
镨
铕
镝
镱
钇
晶体结构
Rare earths, NTO rare earth complex, Variety of crystal structure.
