<strong>CFA-2</strong> and <strong>CFA-3</strong> (Coordination Framework Augsburg University-2 and -3); novel MOFs assembled from trinuclear Cu(I)/Ag(I) secondary building units and 3,3′,5,5′-tetraphenyl-bipyrazolate ligands

Grzywa, Maciej; Geßner, Christof; Denysenko, Dmytro; Bredenkötter, Björn; Gschwind, Fabienne; Fromm, Katharina M.; Nitek, Wojciech; Klemm, Elias; Volkmer, Dirk

doi:10.1039/C3DT32302A

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CFA-2 and CFA-3 (Coordination Framework Augsburg University-2 and -3); novel MOFs assembled from trinuclear Cu(I)/Ag(I) secondary building units and 3,3′,5,5′-tetraphenyl-bipyrazolate ligands

Grzywa, Maciej Institute of Physics, Chair of Solid State and Materials Chemistry, Augsburg University, Germany - Institute of Chemical Technology, Faculty of Chemistry, University of Stuttgart, Germany
Geßner, Christof Institute of Chemical Technology, Faculty of Chemistry, University of Stuttgart, Germany
Denysenko, Dmytro Institute of Physics, Chair of Solid State and Materials Chemistry, Augsburg University, Germany
Bredenkötter, Björn Institute of Physics, Chair of Solid State and Materials Chemistry, Augsburg University, Germany
Gschwind, Fabienne Department of Chemistry, University of Fribourg, Switzerland
Fromm, Katharina M. Department of Chemistry, University of Fribourg, Switzerland
Nitek, Wojciech Faculty of Chemistry, Jagiellonian University, Kraków, Poland
Klemm, Elias Institute of Chemical Technology, Faculty of Chemistry, University of Stuttgart, Germany
Volkmer, Dirk Institute of Physics, Chair of Solid State and Materials Chemistry, Augsburg University, Germany

24.04.2013

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Dalton Transactions. - 2013, vol. 42, no. 19, p. 6909–6921

English The syntheses of H₂-phbpz, [Cu₂(phbpz)]·2DEF·MeOH (CFA-2) and [Ag₂(phbpz)] (CFA-3) (H₂-phbpz = 3,3′,5,5′-tetraphenyl-1H,1′H-4,4′-bipyrazole) compounds and their crystal structures are described. The Cu(I) containing metal–organic framework CFA-2 crystallizes in the tetragonal crystal system, within space group I4₁/a (no. 88) and the following unit cell parameters: a = 30.835(14), c = 29.306(7) Å, V = 27 865(19) Å³. CFA-2 features a flexible 3-D three-connected two-fold interpenetrated porous structure constructed of triangular Cu(I) subunits. Upon exposure to different kinds of liquids (MeOH, EtOH, DMF, DEF) CFA-2 shows pronounced breathing effects. CFA-3 crystallizes in the monoclinic crystal system, within space group P2₁/c (no. 14) and the following unit cell parameters: a = 16.3399(3), b = 32.7506(4), c = 16.2624(3) Å, β = 107.382(2)°, V = 8305.3(2) Å³. In contrast to the former compound, CFA-3 features a layered 2-D three-connected structure constructed from triangular Ag(I) subunits. Both compounds are characterized by elemental and thermogravimetric analyses, single crystal structure analysis and X-ray powder diffraction, FTIR- and fluorescence spectroscopy. Preliminary results on oxygen activation in CFA-2 are presented and potential improvements in terms of framework robustness and catalytic efficiency are discussed.

Faculty

Faculté des sciences et de médecine

Department

Département de Chimie

Language