Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. In an article, author is Toledano, M., once mentioned the application of 5977-14-0, Name is Acetoacetamide, molecular formula is C4H7NO2, molecular weight is 101.1039, MDL number is MFCD00025528, category is amides-buliding-blocks. Now introduce a scientific discovery about this category, Product Details of 5977-14-0.
Coordination of 2,2 ‘-(Trifluoroazanediyl)bis(N,N ‘-dimethylacetamide) with U(VI), Nd(III), and Np(V): A Thermodynamic and Structural Study
Thermodynamic properties of the complexation of 2,2′-(trifluoroazanediyl)bis(N,N’-dimethylacetamide) (CF(3)ABDMA) with U(VI), Nd(III), and Np(V) have been studied in 1.0 M NaNO3 at 25 degrees C. Equilibrium constants of the complexation were determined by potentiometry and spectrophotometry. In comparison with a series of structurally related amine bridged diacetamide ligands, including 2,2′-(benzylazanediyl)bis(N,N’-dimethylacetamide) (BnABDMA), 2,2′-azanediylbis(N,N’-dimethylacetamide) (ABDMA), and 2,2′-(methylazanediyl)bis(N,N’-dimethylacetamide) (MABDMA), CF(3)ABDMA forms weaker complexes with U(VI), Nd(III), and Np(V) due to the lower basicity of the center N atom in CF(3)ABDMA resulting from the attachment of the strong electron-withdrawing CF3-moiety. The complexation strength of CF(3)ABDMA with the three metal ions follows the order: UO22+ > Nd3+ > NpO2, consistent with the order of the effective charges of the metal ions. Structural information on the U(VI)/CF(3)ABDMA complexes in solution and in solid was obtained by theoretical computation, single crystal X-ray diffractometry, F-19 NMR, and electrospray ionization mass spectrometry. The structural data indicate that, similar to the three previously studied amine-bridged diacetamide ligands (BnABDMA, ABDMA, and MABDMA), the CF(3)ABDMA ligand coordinates to UO22+ in a tridentate mode, through the center nitrogen and the two amide oxygen atoms.
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