稀土元素与三个β-二酮分子形成的络合物可作激光工作物质及核磁共振中的化学位移试剂,引起人们极大兴趣,但对稀土元素与四个β-二酮分子形成的络合物之研究则甚少,将其作为化学位移试剂的试探工作更无尝试。我们合成了十六种噻吩甲酰三氟丙酮-稀土元素络合物,其中九种未见文献报道。噻吩甲酰三氟丙酮-稀土元素络合物通常是在水溶液中制备,产物中不可避免地要引入水 Complexes of rare earth elements with three β-diketone molecules can be used as chemical shift reagents in laser working materials and NMR, arousing great interest, but the complex formed by rare earth elements and four β-diketone molecules The study of the compound is very few, as its tentative work of chemical shift reagent more without any attempt. We synthesized sixteen thio formyl trifluoroacetone-rare earth complexes, nine of which have not been reported in the literature. The thenoyltrifluoroacetone-rare earth complex is usually prepared in an aqueous solution, and it is inevitable to introduce water into the product