title: A structurally flexible triazolate-based metal-organic framework featuring coordinatively unsaturated copper(i) sites.
abstract: The novel metal-organic framework CFA-8 (Coordination Framework Augsburg University-8), [Cu2(tqpt)], containing the organic linker H2-tqpt {H2-tqpt = 6,6,14,14-tetramethyl-6,14-dihydroquinoxalino[2,3-b]phenazinebis-triazole}, has been synthesized. Reaction of H2-tqpt and anhydrous CuCl2 in N,N-dimethylacetamide (DMA) yields CFA-8 as orange crystals with lenticular shape. This framework shows a reversible breathing effect and is robust upon solvent removal. It has been characterized by single-crystal and powder X-ray diffraction, TGA, IR spectroscopy and gas sorption measurements. CO adsorption isotherms show that Cu(i) sites in this framework are able to bind carbon monoxide forming a weak complex which has been additionally characterized by IR spectroscopy and synchrotron powder X-ray diffraction measurements.
authors: Augsburg University, Institute of Physics, Chair of Solid State and Materials Chemistry, Universitaetsstrasse 1, 86159 Augsburg, Germany. dirk.volkmer@physik.uni-augsburg.de.
authors: P
authors: P
authors: Schmieder
authors: D
authors: D
authors: Denysenko
authors: M
authors: M
authors: Grzywa
authors: O
authors: O
authors: Magdysyuk
authors: D
authors: D
authors: Volkmer