Synthesis, crystal structure and characterization of a lanthanide complex based on 4-(4-oxypyridinium-1-yl) phthalic acid and 1,10-phenanthroline

ABSTRACT A new lanthanide complex [(Ho(L)(phen)NO3(H2O)]·H2O (1) (H2L = 4-(4-Oxypyridinium -1-yl) phthalic acid, phen = 1,10-phenanthroline) has been afforded under hydrothermal conditions, and characterized by elemental analysis, IR spectra, and X-ray diffraction. In the structure of 1, the L ligand connects Ho(III) atoms through one monodentate and one chelate carboxylate as well as one hydroxy group giving rise to a 2D wavelike polymer layer, which is extended by C–H⋅⋅⋅O hydrogen bond and π⋅⋅⋅π stacking interactions to give rise to a 3D supramolecular network. In addition, PXRD patterns and thermal gravimetric analysis (TGA) of sample 1 were investigated.

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