Some lanthanide (III) complexes of (S,S)-(+)-2,3-dimethoxyl-N,N′-dimethyl-1,4-DIAMINOBUTANE (cas 110-60-1)

Add time:08/26/2019    Source:sciencedirect.com

Four new optically active complexes of the composition LnL3Cl3 (where, L=(S,S)-(+)-2,3-dimethoxyl-N,N′-dimethyl-1,4-diaminobutane, Ln=La3+, Sm3+, Pr3+ and Nd3+) were prepared and characterized on the basis of their chemical analyses, molar conductance, magnetic properties, CD, XPS, visible and IR spectra. It is found that the complexes behave as non-electrolytes in DMSO and in methanol solution and possess the stoichiometric ratio of Ln:C:N:O:Cl =1.1:24.0:6.1:6.0:3.1 which is consistent with the analyses data. The magnetic moments of the complexes show little deviation from the Van Vleck values, indicating that 4f electrons do not participate in bond formation in these chelates. The thermal analysis revealed that all the complexes are anhydrous. Their dominant conformers were determined from CD spectra. A nine-coordinated model was proposed for these complexes.

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