ZnII coordination polymers constructed with malonate and bipyridyl ligands: Photoluminescence and heterogeneous catalytic reactivity

Min Young Hyun, In Hong Hwang, Myoung Mi Lee, Hyun Kim, Kyung Beom Kim, Cheal Kim, Ha Yeong Kim, Youngmee Kim, Sung Jin Kim

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Four three-dimensional ZnII frameworks containing malonates and various bipyridyl pillars (4,4′-bipyridine (1), 1,2-bis(4-pyridyl)ethane (2), 1,2-bis(4-pyridyl)ethylene (3) and 1,3-bis(4-pyridyl)propane (4)) have been prepared, and their structures were determined by X-ray crystallography. In all four frameworks, malonate ligands bridge three Zn ions to form two-dimensional layers, and these layers are connected by bipyridyl pillars to form three-dimensional frameworks with the general formula [{Zn(H2O)(μ- malonate)}2(μ-bipyridyl)] and which also contain water or acetonitrile solvates. Reactivity studies of compounds 1-4 showed that they catalyzed a heterogeneous transesterification reaction of phenyl acetate and could be reused without any significant loss of activity through five runs. Emissions were observed at 347-365 nm (λex = 313 nm) for 2 and 363 nm (λex = 328 nm) for 3, while compounds 1 and 4 showed no luminescence properties. The thermal stabilities of these complexes were also examined.

Original languageEnglish
Pages (from-to)166-171
Number of pages6
JournalPolyhedron
Volume53
DOIs
StatePublished - 2013

Keywords

  • Heterogeneous catalysts
  • Malonate
  • Photoluminescence
  • Transesterification
  • Zn coordination polymers

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