Innovation and Utilization of New Amide Complexes for Tc and Re

MIDOA(2，2‘-(甲亚氨基)双(N，N-二辛基乙酰胺))在正十二烷中具有很高的溶解性，其结构式为CH3N-(CH2CON(C8H17)2)，对Pd(II)、Tc(VII)和Re(Vi)从稀硝酸到正十二烷的分配比都在100以上。EXAFS表明，在萃取过程中，M(Vii)O4-的化学状态保持不变。1H-核磁共振和EXAFS的结果证实了在有机溶液中形成了M(VII)O4-vs.H+MIDOA络合物。红外光谱的比较表明，在H+MIDOA中形成了分子内氢键，并且M(Vii)O4离子通过多个C-Hnvs.O氢键与H+MIDOA相互作用。通过中子俘获反应，提出了高放射性FP(如BA)向非放射性稀土(如La)转化的可行性。

MIDOA(2,2'-(Methylimino)bis(N,N-dioctylacetamide)), whose structural formulae is CH3N-(CH2CON(C8H17)2)2, has a high solubility in n-dodecane, and shows the very high distribution ratio over 100, for Pd(II), Tc(VII) and Re(VII) from diluted HNO3 to n-dodecane. The D values decrease gradually with HNO3 concentration.The EXAFS suggests that, the chemical state of M(VII)O4- is kept during the extraction process. The results of 1H-NMR and EXAFS assured the formation of the M(VII)O4-vs.H+MIDOA complex in the organic solution.Comparison of the observed and calculated IR spectra elucidated that an intramolecular hydrogen bond was formed in H+MIDOA and the M(VII)O4 ion interact with H+MIDOA through multiple C-Hnvs.O hydrogen bonds. The transmutation feasibility of highly radioactive FP(e.g.,Ba) to non radioactve rare earth(e.g., La) was suggested by neutron capture reaction.