A copper based pillared-bilayer metal organic framework: its synthesis, sorption properties and catalytic performanceElectronic supplementary information (ESI) available. CCDC number 929621. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c4dt00228h

• Main Authors: Parshamoni, Srinivasulu, Sanda, Suresh, Jena, Himanshu Sekhar, Konar, Sanjit
• Format: Journal Article
• Language: English
• Published: 15.04.2014
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/c4dt00228h

A new 2D pillared-bilayer flexible open metal organic framework {[Cu(tdc)(bpe)] n ·2 n (H 2 O)· n (MeOH)} (compound 1 ) [H 2 tdc = 2,5 thiophenedicarboxylic acid; bpe = 1,2-bis(4-pyridyl)ethane] has been synthesized through a solvent diffusion technique and structurally characterized. The structure analysis reveals that the tdc ligands formed bilayers with the Cu( ii ) ions along the b -direction and the layers are further pillared by bpe linkers and resulted in a 2D pillared-bilayer porous framework with a four connected uninodal sq1/Shubnikob tetragonal plane net with the Schälfli symbol {4 4 ·6 2 }. The framework is enclosed with large square shaped channels (13.7 × 8.35 Å 2 ) along the bc -plane and the channels are occupied by guest solvent molecules. The adsorption studies reveal that compound 1 shows selective adsorption for CO 2 over CH 4 at room temperature and it also shows hysteretic sorption for a few protic solvents (H 2 O and EtOH) and a Type-1 isotherm for an aprotic solvent (CH 3 CN). The catalytic performance of compound 1 for Glaser type homo-coupling reactions has also been reported. A copper based metal organic framework with selective, hysteretic sorption, which can act as a heterogeneous catalyst for Glaser type homo-coupling reactions.