[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

Journal Article · Thu Jan 14 23:00:00 EST 2010 · Journal of Solid State Chemistry

OSTI ID:21372469

Yingya, Liu; Grzywa, Maciej ^[1]; Weil, Matthias ^[2]; Volkmer, Dirk ^[1]

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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)

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 from 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).

• OSTI ID: 21372469
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 183; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ALCOHOLS
COHERENT SCATTERING
COPPER
CRYSTALS
DIFFERENTIAL THERMAL ANALYSIS
DIFFRACTION
ELEMENTS
HEATING
HYDROXY COMPOUNDS
INFRARED SPECTRA
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
METALS
METHANOL
MINERALS
MONOCRYSTALS
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
POROUS MATERIALS
SCATTERING
SILICATE MINERALS
SPECTRA
SYNTHESIS
THERMAL ANALYSIS
TRANSITION ELEMENTS
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA
X-RAY DIFFRACTION
ZEOLITES