Synthesis, crystal structure, and porosity of 1D coordination polymer of neodymium(III) with isonicotinic acid and dimeric complex of neodymium(III) with nicotinic acid

A 1D coordination polymer [Nd3(INA)9(H2O)6] n (I) and a dimeric complex with mononuclear asymmetric unit [Nd(NA)3(H2O)2] (II) (HINA = isonicotinic acid and HNA = nicotinic acid) were synthesized. The compounds were characterized by elemental analyses, infrared spectroscopy and single crystal X-ray diffraction studies (CIF file CCDC nos. 938976 (I) and 939061 (II). X-ray crystal structure analysis reveals that both compounds exhibit rich structural chemistry. Compounds I and II belong to the monoclinic system with space group P21/c. Thermogravimetric analysis has been performed to investigate their thermal stability. The coordination polymer I has meso-porous structure with average diameter of pores (∼4 nm) and BET surface area 13.62 m2/g.