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Syntheses, X-ray Crystal Structures, Photoluminescence Properties, Antimicrobial Activities and Hirshfeld Surface of Two New Cd(II) Azide/Thiocyanate Linked Coordination Polymers

Majumdar, Dhrubajyoti and Babu, Surendra MS and Das, Sourav and Mohapatra, Chandrajeet and Biswas, Jayanta Kumar and Mondal, Monojit (2017) Syntheses, X-ray Crystal Structures, Photoluminescence Properties, Antimicrobial Activities and Hirshfeld Surface of Two New Cd(II) Azide/Thiocyanate Linked Coordination Polymers. In: CHEMISTRYSELECT, 2 (17). pp. 4811-4822.

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Official URL: http://dx.doi.org/10.1002/slct.201700743

Abstract

The reaction of cadmium(II) acetate salts with multisite coordinated compartmental Schiff base ligand N,N'-Bis(3-methoxysalicylidenimino)-1,3-diaminopropane (H2L1) in presence of co-lingand azido/thiocyanato afforded two new coordination polymers {Cd-4(N-3)(4)(L-1)(2)]H2O}(n) (1), Cd-4(SCN)(4)(L-1)(2)](n) (2). The obtained compounds, 1 and 2 are 1D and 2D coordination polymers respectively and they have been characterized by IR spectroscopy, UV-vis spectroscopy, elemental analysis, and single-crystal X-ray diffraction. The variation in the extended forms of 1 and 2 is governed by the kind of co-ligands utilized in the reaction. The complete structural study reveals that, in both cases the fully deprotonated ligand L-1](2-) has utilized all six potential coordination sites to hold a pair of Cd(II) ions. Moreover, N-3](-) in 1 is coordinating to metal atom by both trans end-to-end (EE mu-1,3) and end-on (EO or mu-1,1) mode and SCN](-) is showing only end-to-end (EE mu-1,3) coordination mode in 2. The photo luminescent properties and antimicrobial activities of the compounds 1 and 2 were investigated and discussed in details. Upon irradiation with UV light Cd(II) polymeric compounds 1-2 exhibit deep blue emissions of 448-451 nm subjected to dimethyl sulfoxide solution due to pi ->pi* intraligand fluorescence. Apart from, as a complementary revelation, intermolecular interactions with respect to percentages of hydrogen bonding in the crystal structures of two Cd(II) polymeric compounds were quantified by Hirshfeld surface and fingerprint plots analysis.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the WILEY-V C H VERLAG GMBH, POSTFACH 101161, 69451 WEINHEIM, GERMANY
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Depositing User: Id for Latest eprints
Date Deposited: 14 Jul 2017 10:33
Last Modified: 21 Feb 2019 11:50
URI: http://eprints.iisc.ac.in/id/eprint/57389

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