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Synthesis, structure and magnetic properties of an inorganic–organic hybrid compound

Mandal, Sukhendu and Green, Mark A and Pati, Swapan K and Natarajan, Srinivasan (2007) Synthesis, structure and magnetic properties of an inorganic–organic hybrid compound. In: Journal of Materials Chemistry, 17 (10). pp. 980-985.

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Hydrothermal reaction of a mixture of $MnC_2O_4, H_3PO_3$, piperazine and water at 423 K for 72h resulted in a new inorganic–organic hybrid phase, $[C_4N_2H_{12}][Mn^{II}\hspace{1mm}_2(HPO_3)_2(C_2O_4)]$, I. The structure comprises a network of $Mn_2O_{10}$ dimers, $HPO_3$ psuedo-tetrahedra and oxalate units, connected through their vertices forming a three-dimensional structure with one-dimensional channels. Protonated piperazine molecules are found in the channels. The formation of $Mn(HPO_3)_\infty$ layers using only one type of secondary building unit, SBU-4, is noteworthy. Detailed magnetic investigations reveal that the antiferromagnetic layers are coupled in such a way to show magnetic polarizations on application of high magnetic field at low temperatures. This is unique and to the best of our knowledge has been observed for the first time in an open-framework solid.

Item Type: Journal Article
Publication: Journal of Materials Chemistry
Publisher: Royal Society of Chemistry
Additional Information: Copyright of this article belongs to the Royal Society of Chemistry.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 26 Jun 2007
Last Modified: 19 Sep 2010 04:36
URI: http://eprints.iisc.ac.in/id/eprint/10466

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