Synthesis, structure and selective luminescence sensing for iron(III) ions of a three‐dimensional zinc(II) (4, 6)‐connected coordination network. Issue 2 (23rd January 2019)

• Record Type: Journal Article
• Authors: Su, Feng; Zhou, Cheng-Yong; Wu, Lin-Tao; Wu, Xi; Han, Chun; Wang, Zhi-Jun
• Is Part Of: Acta crystallographica. Volume 75:Issue 2(2019)
• Page Start: 141
• Page End: 149
• Publication Date: 2019-01-23
• Subjects: three‐dimensional coordination polymer -- biphenyl‐3, 3′, 5, 5′‐tetracarboxylate -- 4, 4′‐bipyridine -- zinc complex -- crystal structure -- topological analysis -- fluorescence properties -- iron(III) sensing -- chemical sensing; Crystallography -- Periodicals; Crystals -- Periodicals; 548.3
• DOI: 10.1107/S2053229619000767
• Languages: English
• ISSNs: 2053-2296

Abstract

Abstract : In a Zn II ‐based coordination polymer synthesized from a mixture of biphenyl‐3, 3′, 5, 5′‐tetracarboxylic acid, 4, 4′‐bipyridine and Zn(NO3 )2 ·6H2 O under solvothermal conditions, the Zn II ions adopt square‐pyramidal geometries and are bridged by two syn – syn carboxylate groups to form [Zn2 (COO)2 ] units. These units are crosslinked by tetracarboxylate ligands to produce a two‐dimensional grid‐like layer that exhibits a stair‐like structure along the a axis. The luminescence sensing results indicate a highly selective and sensitive sensing for Fe 3+ ions. Abstract : Coordination polymers constructed from conjugated organic ligands and metal ions with a d 10 electronic configuration exhibit intriguing properties for chemical sensing and photochemistry. A Zn II ‐based coordination polymer, namely poly[aqua(μ6 ‐biphenyl‐3, 3′, 5, 5′‐tetracarboxylato)(μ2 ‐4, 4′‐bipyridine)dizinc(II)], [Zn2 (C16 H6 O8 )(C10 H8 N2 )(H2 O)2 ] n or [Zn2 ( m, m ‐bpta)(4, 4′‐bipy)(H2 O)2 ] n, was synthesized from a mixture of biphenyl‐3, 3′, 5, 5′‐tetracarboxylic acid [H4 ( m, m ‐bpta)], 4, 4′‐bipyridine (4, 4′‐bipy) and Zn(NO3 )2 ·6H2 O under solvothermal conditions. The title complex has been structurally characterized by IR spectroscopy, elemental analysis, single‐crystal X‐ray diffraction and powder X‐ray diffraction analysis, and features a μ6 ‐coordination mode. The Zn II ions adopt square‐pyramidal geometries and are bridged by two syn – syn carboxylate groups to form [Zn2 (COO)2 ] secondary buildding units (SBUs). The SBUs are crosslinked by ( m, m ‐bpta) 4− ligands to produce a two‐dimensional grid‐like layer that exhibits a stair‐like structure along the a axis. Adjacent layers are linked by 4, 4′‐bipy ligands to form a three‐dimensional network with a {4 4 .6 10 .8}{4 4 .6 2 } topology. In the solid state, the complex displays a strong photoluminescence and an excellent solvent stability. In addition, the luminescence sensing results indicate a highly selective and sensitive sensing for Fe 3+ ions.