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Switchable Room-Temperature Ferroelectric Behavior, Selective Sorption and Solvent-Exchange Studies of H3O]Co-2(dat)(sdba)2]center dot H(2)sdba center dot 5H(2)O

Bhattacharya, Saurav and Pal, Somnath and Natarajan, Srinivasan (2016) Switchable Room-Temperature Ferroelectric Behavior, Selective Sorption and Solvent-Exchange Studies of H3O]Co-2(dat)(sdba)2]center dot H(2)sdba center dot 5H(2)O. In: CHEMPLUSCHEM, 81 (8, SI). pp. 733-742.

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Official URL: http://dx.doi.org/10.1002/cplu.201500564

Abstract

A newly synthesized compound, H3O]Co-2(dat)(sdba)(2)]center dot H(2)sdba center dot 5H(2)O (I, dat=3,5-diamino-1,2,4-triazole; H(2)sdba=4,4'-sulfonyldibenzoic acid), has Co-2 ``paddlewheel'' units connected by sdba ligands to form one-dimensional chains, which are connected by dat to form an anionic three-dimensional structure with cds topology. The one-dimensional channels in the structure contain water molecules, hydronium ions and H(2)sdba. The water molecules could be reversibly exchanged with D2O, CH3OH and C2H5OH molecules; these exchanges were performed in a single-crystal-to-single-crystal manner. Gas sorption studies on the dehydrated compound showed the selective adsorption of CO2 over methane at 195 K. Nonlinear optical measurements indicated that I exhibits a second harmonic generation signal that is approximately one-third that of urea. Studies of polarization versus electric field demonstrated compound I as a potential room-temperature ferroelectric material with a saturation polarization of 0.23 mu Ccm(-2) and remnant polarization of 0.14 mu Ccm(-2). The dehydrated compound exhibited a simple paraelectric behavior.

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: 03 Dec 2016 06:27
Last Modified: 03 Dec 2016 06:27
URI: http://eprints.iisc.ac.in/id/eprint/55285

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