Hydrothermal Syntheses and Structures of Lanthanide Coordination Polymers with 5-Aminoisophthalate and 1,10-Phenthroline

Abstract

Two new lanthanide coordination polymers, [Ln2(APA)2(HAPA)2(phen)2] n [Ln = Pr (1), Eu (2); H2APA = 5-aminoisophthalic acid, phen = 1,10-Phenanthroline] have been synthesized by hydrothermal method, and characterized by single crystal X-ray diffraction, elemental analysis and IR spectra. Crystallographic data show that complexes 1 and 2 both crystallize in a triclinic system, space group $$ P\bar{1} $$ . The titled compounds own 2-D herringbone structures which are further constructed to form 3-D supramolecular structures by N–H···O and O–H···O hydrogen bondings. The thermogravimetric analyses were carried out to examine the thermal stability of the title complexes. And the photoluminescence property of 2 was investigated. In the title complexes 5-aminoisophthalic acids link the lanthanide ions to 2-D herringbone structures which are further constructed to form 3-D supramolecular structures. Two 3-D lanthanide supramolecular coordination polymers with high thermal stability have been synthesized by hydrothermal method.