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.

KEYWORDS:

• 4-(4-Oxypyridinium-1-yl) phthalic acid
• coordination polymer
• crystal structure

Funding

This work was supported by the National Natural Science Foundation of China (No. 21271098 and 21273101), Tackle Key Problem of Science and Technology Project of Henan Province, China (No. 142102310483) and the key Program of Education Committee of Henan Province, China (No 14B150033).