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Organization of Mn-Clusters in pcu and bcu Networks: Synthesis, Structure, and Properties

Bhattacharya, Saurav and Gnanavel, M and Bhattacharyya, Aninda J and Natarajan, Srinivasan (2014) Organization of Mn-Clusters in pcu and bcu Networks: Synthesis, Structure, and Properties. In: CRYSTAL GROWTH & DESIGN, 14 (1). pp. 310-325.

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Official URL: http://dx.doi.org/10.1021/cg401587r

Abstract

Two new anionic inorganic-organic hybrid compounds H3O]Mn-3(mu(3)-OH)(C14H8O6S)(3)(H2O)](DMF)(5), I, and H3O](2)Mn-7(mu(3)-OH)(4)(C14H8O6S)(6)(H2O)(4)](H2O)(2)(DMF)(8), II have been prepared by employing mild solvothennal methods. Both the compounds have three-dimensionally extended structures formed by Mn-6 and Mn-7 clusters, respectively. The connectivity between Mn-6 and Mn-7 clusters and 4,4'-sulfonyldibenzoic acid anions (SDBA(2-)) results in a six connected pcu network in I and an eight connected bcu network in II. The presence of hydronium ion (H-3(O+)) along with the solvent molecules in the channels of both the compounds suggested proton conduction in the solids. Proton conductivity studies gave values of similar to 3 x 10(-4) Omega(-1) cm(-1) 98% relative humidity in both the compounds. The high activation energies indicate a vehicle mechanism in the compounds I and II. Magnetic studies indicate antiferromagnetic behavior in both the compounds.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to the AMER CHEMICAL SOC, USA
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Depositing User: Id for Latest eprints
Date Deposited: 12 Feb 2014 11:15
Last Modified: 12 Feb 2014 11:15
URI: http://eprints.iisc.ac.in/id/eprint/48366

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