skip to main content

Title: [Cu{sub 4}OCl{sub 6}(DABCO){sub 2}].0.5DABCO.4CH{sub 3}OH ('MFU-5'): Modular synthesis of a zeolite-like metal-organic framework constructed from tetrahedral {l_brace}Cu{sub 4}OCl{sub 6}{r_brace} secondary building units and linear organic linkers

A novel metal-organic framework (MOF) based on a tetranuclear copper cluster and a linear organic ligand formulated as [Cu{sub 4}OCl{sub 6}(DABCO){sub 2}].0.5DABCO.4CH{sub 3}OH (denoted as MFU-5, MFU=Metal-Organic Framework, Ulm University; DABCO=1,4-diazabicyclo[2.2.2]octane), was prepared via solvothermal synthesis. In contrast with common MOF synthesis strategies, MFU-5 is assembled from pre-defined molecular secondary building units, i.e. {l_brace}Cu{sub 4}OCl{sub 6}{r_brace} moieties, which become the nodes of the coordination framework. The title compound was characterized by single crystal X-ray diffraction, variable temperature powder diffraction (VT-XRPD), thermal analysis, as well as IR- and UV/Vis spectroscopy. Crystal data for MFU-5: hexagonal, P6/mcc (no. 192), a=25.645(9), c=17.105(11) A, V=9742(8) A{sup 3}, Z=12, 1690 structure factors, R[F{sup 2}>2sigma(F{sup 2})]=0.049. MFU-5 is a 3D metal-organic framework with 1D channels running along the c-axis hosting DABCO and methanol solvent molecules. The framework displays a zeolite-like structure constructed from mso cages, which represents the composite building units in the zeolites SSF, MSO and SZR. Two-fold interpenetration is observed between these building units. TG/DTA-MS and VT-XRPD characterization reveal a stepwise release of methanol and DABCO molecules upon heating, eventually resulting in a structural change into a non-porous material. - Graphical abstract: The metal-organic framework [Cu{sub 4}OCl{sub 6}(DABCO){sub 2}].0.5DABCO.4CH{sub 3}OH (MFU-5) is constructed frommore » a molecular precursor containing {l_brace}Cu{sub 4}OCl{sub 6}{r_brace} secondary building units which become cross-linked into a 3D zeolite-type network with hexagonal symmetry by linear DABCO ligands (DABCO=1,4-diazabicyclo[2.2.2]octane).« less
Authors:
;  [1] ;  [2] ;  [1]
  1. Ulm University, Institute of Inorganic Chemistry II-Materials and Catalysis, Albert-Einstein-Allee 11, D-89081 Ulm (Germany)
  2. Institute for Chemical Technologies and Analytics, Division of Structural Chemistry, Vienna University of Technology, Getreidemarkt 9/164-SC, A-1060 Vienna (Austria)
Publication Date:
OSTI Identifier:
21372469
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 183; Journal Issue: 1; Other Information: DOI: 10.1016/j.jssc.2009.10.026; PII: S0022-4596(09)00510-6; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; COPPER; DIFFERENTIAL THERMAL ANALYSIS; HEATING; INFRARED SPECTRA; METHANOL; MONOCRYSTALS; ORGANOMETALLIC COMPOUNDS; POROUS MATERIALS; SYNTHESIS; ULTRAVIOLET SPECTRA; VISIBLE SPECTRA; X-RAY DIFFRACTION; ZEOLITES ALCOHOLS; COHERENT SCATTERING; CRYSTALS; DIFFRACTION; ELEMENTS; HYDROXY COMPOUNDS; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; MATERIALS; METALS; MINERALS; ORGANIC COMPOUNDS; SCATTERING; SILICATE MINERALS; SPECTRA; THERMAL ANALYSIS; TRANSITION ELEMENTS