Jump to main content
Jump to site search


Four coordination polymers based on dinuclear and trinuclear units with a new multifunctional pyridyl-dicarboxylate ligand: luminescence and magnetic properties

Author affiliations

Abstract

Four coordination polymers of different transition metal ions with a new pyridyl-dicarboxylate ligand, 4-(3,5-dicarboxylphenyl)-2-methylpyridine (H2L), were synthesized under solvothermal conditions and their structures and properties were characterized. They are formulated as [Zn(L)(H2O)]·H2O (1), [Mn3(L)2Cl2(H2O)2]·2H2O (2), [Co3(L)2(NO3)2(H2O)2] (3) and [Ni3(L)2(NO3)2(H2O)2]] (4). Compound 1 exhibits a 2D network with a (3,6)-connected kgd topology based on the dinuclear [Zn2O2] units. In compound 2, the linear trinuclear [Mn3(μ-Ocarboxylate)2(COO)2Cl2] units with mixed carboxylate and μ-Cl triple bridges are cross-linked by the L ligands into a 3D framework with a (3,6)-connected rtl topology. Compounds 3 and 4 are isostructural and both show 2D networks in which the linear trinuclear [M3(μ-Ocarboxylate)2(COO)2(μ-ONO3)2] units (M = Co (3) and Ni (4)) are cross-linked by the L ligands. Compound 1 shows strong blue emissions in the solid state at room temperature. Magnetic studies indicate that the mixed triple [(μ-Ocarboxylate)(COO)Cl] bridges transmit antiferromagnetic interactions between Mn(II) ions in 2, while the mixed triple (μ-Ocarboxylate)(COO)(μ-ONO3) bridges in 3 and 4 transmit ferromagnetic interactions. Further magnetic studies demonstrated that the Co(II) compound shows no long-range magnetic ordering at 2 K.

Graphical abstract: Four coordination polymers based on dinuclear and trinuclear units with a new multifunctional pyridyl-dicarboxylate ligand: luminescence and magnetic properties

Back to tab navigation

Supplementary files

Publication details

The article was received on 02 Jun 2017, accepted on 25 Aug 2017 and first published on 25 Aug 2017


Article type: Paper
DOI: 10.1039/C7CE01042G
Citation: CrystEngComm, 2017, Advance Article
  •   Request permissions

    Four coordination polymers based on dinuclear and trinuclear units with a new multifunctional pyridyl-dicarboxylate ligand: luminescence and magnetic properties

    F. Liu, W. Gao, X. Zhang, J. Liu and E. Gao, CrystEngComm, 2017, Advance Article , DOI: 10.1039/C7CE01042G

Search articles by author

Spotlight

Advertisements