Jump to main content
Jump to site search


Exploring the Syntheses, Structures, Topologies, Luminescence Sensing and Magnetism of Zn(II) and Mn(II) Coordination Polymers Based on a Semirigid Tricarboxylate Ligand

Abstract

Solvothermal reactions of Zn(II) or Mn(II) salts and 2-(4-carboxyphenoxy)terephthalic acid (H3cpota) in the presence of N-heterocyclic group ligands (1,10-phenanthroline (phen) or 1,4-di(1H-imidazol-1-yl)benzene (bib) or 4,4’-bipyridine (4,4’-bpy)) produced four multi-dimensional coordination polymers, namely, [Mn(4-Hcpota)(phen)]n•nH2O 1 (1D), [Mn2(4-Hcpota)(3-Hcpota)(2-bib)2(H2O)]n 2 (3D), [Zn(3-Hcpota)(phen)]n•nH2O 3 (2D), [Zn2(5-cpota)(2-4,4ʹ-bpy)(3-OH)]n•nH2O 4 (3D). Complex 1 features one-dimensional double ladder formed by syn-anti carboxylate-bridged dimeric Mn(II) units with R(26) and R(8) alternating patterns sharing three atoms and gives the (42.6) topology. Complex 2 is formed by linear inorganic chains sharing Mn(II) R(8) in double syn-syn carboxylate-bridges and H-bond R11(8) alternate modes, which are further connected to each other by two symmetry independent Hcpota2- ligands as well as coordinated bib bridges giving rise to a three-dimensional net with a novel (4.62)(4.68.8)(43.611.8)(43.63) topology. Complex 3 exhibits two-dimensional layer structure containing R(36) rings based on the R(8) dinuclear Zn(II) units with (32.44)(34.46.64.7) fes-net topology. The phen and benzoic acid groups are like two kinds of blades in the two sides of the two-dimensional structure. Complex 4 is an interesting three-dimensional (3,8)-connected network including tetranuclear tricyclic [Zn4(OH)2(COO)6] clusters with a new (4.5.6)2(42.56.616.72.82) topology. The semirigid tricarboxylate ligand (H3cpota) also shows three geometric modes in the self-assembly of four coordination polymers : a) ‘L’ shape in 1; b) ‘I’ shape in 2 & 3; c) ‘T’ shape in 4. The magnetism disclosed their antiferromagnetic behaviors of 1 and 2 . The luminescence exploration demonstrated that the complex 3 had highly sensitive, selective, low detection limit and well-recyclable properties in the detection of hexavalent chromium anions in aqueous solution. Quenching mechanisms were also studied in detail.

Back to tab navigation

Supplementary files

Publication details

The article was received on 08 Jun 2018, accepted on 02 Aug 2018 and first published on 03 Aug 2018


Article type: Paper
DOI: 10.1039/C8CE00947C
Citation: CrystEngComm, 2018, Accepted Manuscript
  •   Request permissions

    Exploring the Syntheses, Structures, Topologies, Luminescence Sensing and Magnetism of Zn(II) and Mn(II) Coordination Polymers Based on a Semirigid Tricarboxylate Ligand

    S. Li, L. Lu, M. Zhu, S. Feng, F. Su and X. Zhao, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C8CE00947C

Search articles by author

Spotlight

Advertisements