ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Self-penetrating and interpenetrating 3D metal–organic frameworks constructed from 4-(4-carboxyphenoxy)-phthalic acid and N-donor auxiliary ligands

He Wu, Wu-Juan Sun, Wen-Jie Zhao, Ting Shi, Xu-Zhao Liao, and Xu-Wu Yang

Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry and Materials Science, Northwest University, Xi’an, 710069, China

E-mail: yangxuwu@nwu.edu.cn

Abstract: Two new interesting entangled structures, namely, [Ni_1.5(L)(bpy)₂(H₂O)₃]_n·3nH₂O (I) and [Cd₃(L)₂(bbi)₂]_n · nH₂O (II) (where H₃L is 4-(4-carboxyphenoxy)-phthalic acid, bpy is 4,4´- bipyridine, and bbi is 1,1´-(1,4-butanediyl)bis(imidazole)) have been synthesized and characterized by elemental analysis (EA), infrared spectra (IR), X-ray powder diffraction (XRPD), solid fluorescence and thermogravimetric analysis (TGA). Single-crystal X-ray diffraction analysis revealed that complex I possesses a 3D self-penetrating framework constructed from ladder-like and fishbone-like subunits. Complex II shows a 3D framework of two-fold interpenetration assembled from trinuclear Cd(II) clusters bridged by bbi and L³⁻ ligands.

Keywords: entangled structure – X-ray diffraction – luminescence – thermal analysis

Full paper is available at www.springerlink.com.

DOI: 10.1515/chempap-2015-0006

Chemical Papers 69 (2) 300–308 (2015)