Synthesis, structures and luminescent properties of Co(II) and Ni(II) metal-organic frameworks with semirigid diphthalic ligands |
| |
| Authors: | Ningning Zhao Kang Wang Wenjun Li Yongzhong Bian Changyan Sun Zhidong Chang Hongxia Fan |
| |
| Institution: | Department of Chemistry and Chemical Engineering, University of Science and Technology Beijing, No.30 Xueyuan Road, Haidian District, Beijing 100083, China |
| |
| Abstract: | A series of transition metal coordination polymers Co(H3L)2(4,4′- bpy)(H2O)2]n?n(4,4′-bpy) (1), Ni(H2L)(4,4′-bpy)(H2O)2]n (2), Co2(L)(phen)2(H2O)4]n?(H2O)2n (3), and Ni2(L)(phen)2(H2O)4]n?(H2O)2n (4) have been assembled from a semirigid multicarboxylate ligand 3,3′-(1,4-phenylenebis(oxy))diphthalic acid (H4L) with the help of 4,4′-bipyridine (4,4′-bpy) ligand or 1,10-phenanthroline (phen) ligand. X-ray single crystal diffraction analysis reveals that complex 1 crystallizes in the space group of P − 1 and displays a one-dimensional (1D) chain structure constructed from 4,4′-bpy ligand and H3L ligand, which was further interlinked to form a three-dimensional network via hydrogen bonds. In complex 2, Ni(II) atoms are coordinated by L ligand in monodentate fashion to form alternate left- and right-helices, which are further bridged together by the coordination interactions between Ni(II) atoms and 4,4′-bpy, leading to a 2-fold (4, 4)-connected interpenetrating network. Isostructural complexes 3 and 4 belong to the space group P − 1 and display a 1D chain structure constructed from phen and L ligands, which was further interlinked to form a 2D plane via π–π interactions. In addition, their thermal and luminescent properties were also investigated. |
| |
| Keywords: | Diphthalic acid Transition metal Semirigid ligand Interpenetration |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
