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Title: Synthesis of tricarboxylic acid based metal organic frameworks: Structural and gas adsorption studies
Authors: Singh, Udai Pratap
Verma P.
Butcher R.J.
Published in: Journal of Molecular Structure
Abstract: Two folded interpenetrating metal organic frameworks (MOFs) viz. {[Zn4(L)2(NO3)(H2O)3]+ [S1]}n(LZn) and {[Cd4(L)2(NO3)(DMF)8(H2O)](NO3)(DMF)2(S2)}n (LCd) where S1 denotes squeezed nitrate anions and solvent molecules and S2 denotes the squeezed solvent molecule, have been synthesized from (4,4′,4′'-(((2,4,6-trimethylbenzene-1,3,5-triyl)tris(methylene))tris(azanediyl))tribenzoic acid) (H3L) ligand and Zn(NO3)2•6H2O/Cd(NO3)2•4H2O metal salts by solvothermal process. The structural analysis showed that both LZn and LCd are two dimensional (2D) interpenetrating metal organic frameworkscontaining binuclear paddle wheel secondary building units (SBUs), Zn2(COO)3 and Cd2(COO)3, with hexagonal (hcb) net topology having 3-connected uninodal net. In LZn, both interpenetrating frameworks are vertical while in LCd, these are parallel to each other. Thermogravimetric analysis showed that both MOFs are stable up to 350 °C. Gas adsorption study demonstrated that these MOFs are selective towards CO2 over N2 gas due to sieving effect as well as Lewis acid-Lewis base interaction. © 2020
Citation: Journal of Molecular Structure, 1224
Issue Date: 2021
Publisher: Elsevier B.V.
Keywords: Gas adsorption
Thermal gravimetric analysis
Tricarboxylic acid
Two dimensional (2D) MOFs
ISSN: 222860
Author Scopus IDs: 57649843400
Author Affiliations: Singh, U.P., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Verma, P., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Butcher, R.J., Department of Chemistry, Howard University, Washington, DC 20059, United States
Funding Details: The authors are grateful to the BRNS (DAE), Mumbai, India ( BRNS/37018 ) Mumbai, India for financial assistance. P. Verma gratefully acknowledges IIT Roorkee for awarding MHRD fellowship. We thank Dr. Paritosh Mohanty, Department of Chemistry, IIT Roorkee, for the gas adsorption study. Department of Atomic Energy, Government of India, पऊवि: BRNS/37018; Indian Institute of Technology Roorkee, IITR; Ministry of Human Resource Development, MHRD
Corresponding Author: Singh, U.P.; Department of Chemistry, India; email:
Appears in Collections:Journal Publications [CY]

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