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New open-framework phosphate and phosphite compounds of gallium

Ramaswamy, Padmini and Mandal, Sukhendu and Natarajan, Srinivasan (2011) New open-framework phosphate and phosphite compounds of gallium. In: Inorganica Chimica Acta, 372 (1, Sp.). pp. 136-144.

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Official URL: http://dx.doi.org/10.1016/j.ica.2011.02.034

Abstract

Five new open-framework compounds of gallium have been synthesized by hydrothermal methods and their structures determined by single crystal X-ray diffraction studies. The compounds, C8N4H26]Ga6F4(PO4)(6)], I, C5N3H11]Ga3F2(PO4)(3)]center dot H2O, II, C6N3H19]Ga-4(C2O4)(PO4)(4)(H2PO4)]center dot 2H(2)O, III, Ga2F3(HPO4)(PO4)]center dot 2H(3)O, IV, and C3N2H5](2)Ga-4(H2O)(3)(HPO3)(7)], V, possess three-dimensional structures. All the compounds are formed by the connectivity between the Ga polyhedra and phosphite/phosphate units. The observation of SBU-6 (I and II) and spiro-5 (IV) secondary building units (SBUs) are noteworthy. The flexibility of the formation of gallium phosphate frameworks has been established by the isolation of two related structures (I and II) from the same SBU units but different organic amines. Some of the present structures have close resemblance to the gallium phosphate phases known earlier. The compounds have been characterized by CHN analysis, powder XRD, IR, and TGA. (C) 2011 Elsevier B. V. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Hydrothermal synthesis;Gallium phosphate;Crystal structures; Characterization
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 15 Jun 2011 05:35
Last Modified: 15 Jun 2011 05:35
URI: http://eprints.iisc.ernet.in/id/eprint/38249

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