Sulfates of organic diamines: hydrogen-bonded structures and properties

Jayaraman, K and Choudhury, A and Rao, CNR (2002) Sulfates of organic diamines: hydrogen-bonded structures and properties. In: Solid State Sciences, 4 (3). pp. 413-422.

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Abstract

In order to investigate the supramolecular hydrogen-bonded networks and other structural features exhibited by compounds containing an organic cation and an inorganic anion, sulfates of the organic diamines, ethylenediamine (I), 1,3-diaminopropane (II), piperazine (III), and 1,4-diazabicyclo[2.2.2]octane (DABCO) (IV) have been prepared investigated by X-ray crystallography. While II, III, and IV crystallize in the centrosymmetric space group, Pbca, P2(1)/n, Pbcn, respectively, I crystallizes in the non-centrosymmetric space group, P4(1) exhibiting chirality and weak NLO properties. I-IV exhibit different types of supramolecular H-bonded networks involving the organic cation and the SO42- anion. The nature and strength of the H-bonding network vary from one compound to another, with the strongest network found in piperazinium sulfate, III, and the weakest in II. While in III, water molecules form part of the H-bonded network, they are present as guest molecules in the channels of IV. Thermal stability of the compounds as well as the infrared spectra reflect the stabilities of these H-bonded solids. (C) 2002 Editions scientifiques et medicales Elsevier SAS. All rights reserved.

Item Type:	Journal Article
Publication:	Solid State Sciences
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Hydrogen bonded solids;Sulfates of diamines;Supramolecular assembly
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	28 Jul 2011 05:10
Last Modified:	28 Jul 2011 05:10
URI:	http://eprints.iisc.ac.in/id/eprint/39433

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