TY - JOUR
T1 - Two-dimensional flexible Ni(II)-based porous coordination polymer showing single-crystal to single-crystal transformation, selective gas adsorption and catalytic properties
AU - Agarwal, Rashmi A.
AU - Mukherjee, Soumya
N1 - Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2016/2/17
Y1 - 2016/2/17
N2 - A novel two dimensional (2D) porous coordination polymer {[Ni3(TBIB)2(BTC)2(H2O)6]·5C2H5OH·9H2O}n (1) [TBIB = 1,3,5-tri(1H-benzo[d]imidazol-1-yl)benzene, H3BTC = 1,3,5-benzenetricarboxylic acid] has been synthesized solvothermally. In 1, layers are stacked in ABAB fashion by virtue of strong intermolecular hydrogen bonding interactions, to generate an overall 3D supramolecular framework consisting of isolated pockets accommodated solvent molecules inside. These lattice-constituent solvent molecules are replaced by dichloromethane (DCM), after immersing complex 1 in DCM for seven days at room temperature, yielding {[Ni3(TBIB)2(BTC)2(H2O)6]·6CH2Cl2·6H2O}n (2). Arrangement of layers is slightly changed in compound 2 wherein, small pockets are completely absent. Characterization of these two compounds 1 and 2 has been performed employing, single crystal X-ray diffraction, IR spectroscopy, thermogravimetry and elemental analysis. Importantly, complex 1 shows selective sorption of CO2 gas at low temperature and pressure, and simultaneously displays high heterogeneous catalytic activity for Knoevenagel condensation at high temperature.
AB - A novel two dimensional (2D) porous coordination polymer {[Ni3(TBIB)2(BTC)2(H2O)6]·5C2H5OH·9H2O}n (1) [TBIB = 1,3,5-tri(1H-benzo[d]imidazol-1-yl)benzene, H3BTC = 1,3,5-benzenetricarboxylic acid] has been synthesized solvothermally. In 1, layers are stacked in ABAB fashion by virtue of strong intermolecular hydrogen bonding interactions, to generate an overall 3D supramolecular framework consisting of isolated pockets accommodated solvent molecules inside. These lattice-constituent solvent molecules are replaced by dichloromethane (DCM), after immersing complex 1 in DCM for seven days at room temperature, yielding {[Ni3(TBIB)2(BTC)2(H2O)6]·6CH2Cl2·6H2O}n (2). Arrangement of layers is slightly changed in compound 2 wherein, small pockets are completely absent. Characterization of these two compounds 1 and 2 has been performed employing, single crystal X-ray diffraction, IR spectroscopy, thermogravimetry and elemental analysis. Importantly, complex 1 shows selective sorption of CO2 gas at low temperature and pressure, and simultaneously displays high heterogeneous catalytic activity for Knoevenagel condensation at high temperature.
KW - Catalysis
KW - Coordination polymer
KW - Gas adsorption
KW - Hydrothermal
KW - Supramolecular chemistry
UR - http://www.scopus.com/inward/record.url?scp=84954126416&partnerID=8YFLogxK
U2 - 10.1016/j.poly.2015.12.008
DO - 10.1016/j.poly.2015.12.008
M3 - Article
AN - SCOPUS:84954126416
SN - 0277-5387
VL - 105
SP - 228
EP - 237
JO - Polyhedron
JF - Polyhedron
ER -