Six new dinuclear Schiff base complexes of Cu(II)/Ln(III) system: Synthesis, characterization and magnetic studies

Add time:09/24/2019    Source:sciencedirect.com

A series of dinuclear complexes having general formula, [M1(NO3)(valpn)M2(NO3)2(H2O)2]·H2O where M1 = Cu(1–6) and M2 = La(1), Nd(2), Sm(3), Gd(4), Tb(5) and Er(6), have been synthesized from the bifunctional ligand (H2valpn = 2,2'-{propane-1,3-diylbis[nitrilo(E)methylylidene]}bis(6-methoxyphenol)). The X-ray structure for (2), bis(μ2-2,2'-(Propane-1,3-diylbis(nitrilomethylylidene))bis(6-methoxyphenolato)-(nitrate)-bis(nitrato)-diaqua-copper(II)-neodymium(III)hydrate, completely described the coordination behavior around each metal center along with the geometric shape of the compound. The magnetization of the synthesized bimetallic complexes were assessed by vibrating sample magnetometry, particularly, the temperature dependence magnetic susceptibility for CuIILaIII (1), CuIINdIII (2), CuIISmIII (3), CuIIGdIII (4), CuIITbIII (5) and CuIIErIII (6) systems were evaluated and the interaction strength between the Cu and the respective lanthanide ion, present in these complexes, were estimated.

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