Molecular, supramolecular structure and catalytic activity of transition metal complexes of phenoxy acetic acid derivatives |
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| Authors: | Avijit Pramanik Srinivas Abbina Gopal Das |
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| Affiliation: | aDepartment of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India |
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| Abstract: | Six mononuclear complexes [M(L1)2(H2O)4] (M = Co(II), 1a and M = Mn(II), 1b), [Cu(L1)2(H2O)2] (1c), [Cu(L1)2(H2O)(Py)2] (1d), [Cu(L3)(H2O)Cl] · H2O (3a) and [Co(Sal)(H2O)(Py)3] · 2ClO4 · H2O (3b) of phenoxyacetic acid derivatives and Schiff base were determined by single crystal X-ray diffraction. The Co(II) (1a) and Mn(II) (1b) complexes are isomorphous. X-ray crystal structural analyses reveal that these coordination complexes form polymeric structure via formation of different types of hydrogen bonding and π-stacking interactions in solid. Thermal analysis along with the powder X-ray diffraction data of these complexes shows the importance of the coordinated and/or crystal water molecules in stabilizing the MOF structure. Complexes 1a, 1c, 3a show marginal catalytic activity in the oxidation of olefins to epoxides in the presence of i-butyraldehyde and molecular oxygen. |
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| Keywords: | Metallacycles Hydrogen bonds Crystal engineering Metal–organic framework Thermal analysis Catalytic activity |
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