Three metal–organic frameworks constructed from imidazole-based multi-carboxylate ligands: Syntheses, structures and photoluminescent properties. (15th October 2016) - Zhou, Wenyan
Graphical abstract: Three imidazole dicarboxylate-based metal–organic frameworks have been solvothermally synthesized and structurally characterized by single-crystal X-ray diffraction. Furthermore the thermal and solid-state photoluminescent properties have also been investigated. Abstract: Three metal–organic frameworks, [Ba( o -CPhH2 IDC)] n (1 ), {[Ca( o -CPhH2 IDC)(H2 O)2 ]·H2 O} n (2 ), ( o -CPhH4 IDC = 2-(2-carboxylphenyl)-1 H -imidazole-4, 5-dicarboxylic acid) and {[Cd( m -CPhH2 IDC)(phen)]·H2 O} n (3 ) ( m -CPhH4 IDC = 2-(3-carboxylphenyl)-1 H -imidazole-4, 5-dicarboxylic acid and phen = 1, 10-phenanthroline), have been solvothermally synthesized and structurally characterized by elemental analyses, IR, thermogravimetric analyses and single-crystal X-ray diffraction. Compound1 is a (5, 5)-connected 3D structure. Compound2 displays an infinite 1D double-chain structure. Complex3 presents a wave-like architecture by π–π interactions from neighboring zig zag chains. The imidazole-based multi-carboxylate ligand demonstrates a strong coordination ability and versatile coordination modes. Furthermore, the thermal and solid-state photoluminescent properties have also been investigated.