Syntheses, crystal structures, and magnetic and luminescent properties of a series of lanthanide coordination polymers with chelidamic acid ligand

• Published in: Polyhedron Vol. 29; no. 13; pp. 2674 - 2679
• Main Authors: Zou, Jian-Ping, Luo, Sheng-Lian, Li, Ming-Jun, Tang, Xin-Hua, Xing, Qiu-Ju, Peng, Qiang, Guo, Guo-Cong
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 03.09.2010
• Subjects: Crystal structures; Lanthanides; Luminescence; Magnetic properties; Metal–organic frameworks; Crystal structures; Lanthanides; Metal–organic frameworks; Luminescence; Magnetic properties
• ISSN: 0277-5387
• DOI: 10.1016/j.poly.2010.06.008

A series of lanthanide(III) complexes with chelidamic acid, [Ln(C 7H 2NO 5)·3H 2O] n · nH 2O (Ln = La ( 1), Y ( 2), Sm ( 3), and Nd ( 4)), [Gd 2(C 7H 2NO 5) 3·4H 2O] n ·2 nH 2O ( 5) and [Ce(C 7H 2NO 5)·1.5H 2O] n ( 6), have been synthesized by hydrothermal reaction. The X-ray diffraction analyses show that complexes 1– 4 are isostructure and exhibit 2D framework. Complex 5 contains two different Gd(III) ions linked through carboxylate group to form a 2D framework. Complex 6 exhibits a (4 4) topology 2D network, which is the first example for lanthanide complexes with chelidamic acid. The variable-temperature magnetic properties of 3 and 5 have been investigated. Furthermore, the photoluminescent properties of 1, 2, 3, and 5 at room temperature were also studied. A series of lanthanide(III) complexes with chelidamic acid ligand, [Ln(C 7H 2NO 5)·3H 2O] n · nH 2O (Ln = La ( 1), Y ( 2), Sm ( 3), and Nd ( 4)), [Gd 2(C 7H 2NO 5) 3·4H 2O] n ·2 nH 2O ( 5) and [Ce(C 7H 2NO 5)·1.5H 2O] n ( 6), have been synthesized by hydrothermal method and structurally characterized by single-crystal X-ray diffraction. Complexes 1– 4 are isostructural and possess 2D framework. Complex 5 contains two different Gd(III) ions linked through carboxylate group to form a 2D framework. Complex 6 exhibits a (4 4) topology 2D network. The variable-temperature magnetic properties of 3 and 5 have been investigated. Furthermore, the photoluminescent properties of 1, 2, 3, and 5 at room temperature were also studied.