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Synthesis, Structure, and Magnetic Properties of Amine-Templated Transition-Metal Phosphites

Ramaswamy, Padmini and Mandal, Sukhendu and Hegde, Nayana N and Prabhu, Ramanath and Banerjee, Debmalya and Bhat, SV and Natarajan, Srinivasan (2010) Synthesis, Structure, and Magnetic Properties of Amine-Templated Transition-Metal Phosphites. In: European Journal of Inorganic Chemistry (12). pp. 1829-1838.

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Official URL: http://www3.interscience.wiley.com/journal/1233243...

Abstract

Transition-metal phosphites of cobalt and vanadium, [C4N2H12][Co(HPO3)(2)] (I), [C4N2H14][Co(HPO3)(2)] (II), [Co[C4H8N12)(H2PO3)(2)] (III),[C4N2H14][(VF)-F-III(HPO3)(2)]center dot H2O (IV), and[C3N2H5](2)[V-4(III)(H2O)(3)(HPO3)(4)(HPO4)(3)] (V), have been synthesized and characterized. Organophosphorus esters were employed to stabilize cobalt in tetrahedral coordination and also to prepare the low-dimensional structures, which are otherwise difficult to synthesize. The structures have one- (I, II, IV), two- (III) and three-dimensionally (V) extended networks built up by the linking of metal polyhedra and phosphite units. Another vanadyl phosphite, [C2N2H10][((VO)-O-IV)(3)(H2O) (HPO3)(4)]center dot H2O,([15]) was also prepared and investigated extensively by ESR, magnetic susceptibility, and other studies. All the compounds in the present study exhibit antiferromagnetic interactions. Well-established magnetic models have been used to fit the experimental data. The compounds havealso been characterized in detail by using UV/Vis spectroscopic studies.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to John Wiley and Sons.
Keywords: Solvothermal synthesis;X-ray diffraction;Transition metals;Phosphorus;Open frameworks
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 02 Jun 2010 05:13
Last Modified: 02 Jun 2010 05:13
URI: http://eprints.iisc.ernet.in/id/eprint/28218

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