Abstract
Two isostructural mononuclear complexes of Lanthanides (Ln = La and Pr) constructed from 1,8-naphthalene dicarboxylate (NDC) and 1,10-Phenanthroline (Phen) as auxiliary ligand are reported. Both the complexes were formed through an in situ hydrolytic ring opening reaction of 1,8-naphthalic anhydride with Phen ligands. 3D supramolecular structures are observed which are guided by different weak interactions. The crystal structures of both the complexes were determined by single crystal X-ray diffraction. The room temperature photoluminescence studies, carried out in the powder state displayed three noticeable peaks from excited ( 3 P J ; J = 2, 1, and 0) to ground state ( 3 H 4) at ~464, 497, and 538 nm respectively, under UV excitation. Temperature dependent dc susceptibility (c = M/H) as a function of temperature is investigated where Pr-complex shows antiferromagnetic behavior. The Hirshfeld surface analysis of the two complexes is also described.
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