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PolyhedronVolume 80, 25 September 2014, Pages 256-264

Bis(2,2′-bipyridine)-bis(μ3-phthalato)-dicopper(II) tetrahydrate as molecular sieve with zero-dimensional structure(Article)

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  • aInnovation Center, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
  • bDepartment of General and Inorganic Chemistry, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
  • cFaculty of Physical Chemistry, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia

Abstract

Crystal structure of the title compound: [Cu2(bipy) 2(pht)2]·4H2O (bipy = 2,2′-bipyridine, pht = dianion of phthalic acid), CuBP·4H 2O, consists of dinuclear entities, which are further connected by π-π stacking interactions between bipy ligands. In this way small channels (micropores) oriented parallel to the [0 0 1] direction and containing loosely hydrogen bonded water molecules are formed. The structural changes during dehydration-rehydration have been thoroughly investigated using TG/DSC analysis, FT-IR spectroscopy, X-ray powder diffraction, optical and scanning electron microscopy, and sorption experiments. In addition, dehydration process was analyzed from the aspect of kinetics. A complete reversibility of the dehydration-rehydration CuBP·4H2O(s) CuBP(s) + 4H 2O(g) process was confirmed by all means. Therefore, CuBP·4H2O can be classified as molecular sieve with quite unexpected zero-dimensional structure. © 2014 Elsevier Ltd. All rights reserved.

Author keywords

Crystal structureCu(II) complexMolecular sievePhthalate ionReversible dehydration

Indexed keywords

Engineering controlled terms:Copper compoundsCrystal structureHydrogen bondsMolecular sievesMoleculesScanning electron microscopySievesX ray powder diffraction
Engineering uncontrolled termsBipyridinesCrystals structuresCu(II) complexDehydration-rehydrationDicopperPhthalate ionPhthalatesReversible dehydrationTitle compoundsZero-dimensional structures
Engineering main heading:Dehydration

Funding details

Funding sponsor Funding number Acronym
172015,III45007

  • 1

    We are indebted to Dr. Zoran Laušević from Vinča Institute of Nuclear Sciences for his help with CO 2 gas adsorption analysis. Support of this work by the Ministry of Education, Science and Development of the Republic of Serbia (Grants No. III45007 and 172015 ) is gratefully acknowledged.

  • ISSN: 02775387
  • CODEN: PLYHD
  • Source Type: Journal
  • Original language: English
  • DOI: 10.1016/j.poly.2014.05.026
  • Document Type: Article
  • Publisher: Elsevier Ltd

  Zdravković, J.; Innovation Center, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Serbia;
© Copyright 2024 Elsevier B.V., All rights reserved.

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