1-苯-基-3-甲基-4-苯甲酰基-吡唑酮-5(HPMBP)与Eu、Pr、Yb的配合物作为位移试剂的初步尝试

A Preliminary Study on Coordination Compounds of Eu(Ⅲ)、Pr(Ⅲ)and Yb(Ⅲ)with ~1HPMBP as HNMR Shift Reagents

本文以 LnA_3·HA((Ln=Eu、Pr、Yb,HA=HPMBP)的固态配合物作为核磁共振的移位试剂,以 CDCl_3,CCl_4为溶剂,对正已醇、正辛醇作了实验,结果表明,它们都有一定的位移作用,且以 YbA_3HA 尤为显著,EuA_3·HA、PrA_3·HA 俏差.YbA_3·HA 及 EuA_3·HA向低场位移.PrA_3·HA 向高场位移,YqA_3·HA 的位移能力略逊于 Eu(fod)_3,不过 YbA_5·HA有易于合成,不吸潮,易于保存,价格便宜等优点.

The ~1HNMR shift data of solid coordination compounds LnA_3·HA(Ln=Eu,Pr and Yb,HA=HPMBP)in CDCI_3 or CCI_4 as solvent has beendetermined using n-hexanol and n-octanol as substrates.The experimntalresult show that these compounds were Passessed of certain shift ability.With above described substrates EuA_3.HA and YbA_3.HA were shiftedto downfield,but PrA_3.HA was shifted to upfield.The shift ability ofYbA_3.HAis more stronger than another two,and weaker than Eu(fo-d)_3.However,the advantage of YbA_3.HA is as follows:No hydroscopic,synthesis and store easily and lower price.