Synthesis, Structure, and Magnetic Properties of a Novel Pillared Layered Iron(III) Arsenate,$[4,4\prime-bpyH_2]_3$ $[Fe_9(H_2O)_6F_3(HAsO_4)_{12}(AsO_4)_2]$ $\bullet2H_2O$

Rao, Vandavasi K and Green, Mark A and Pati, Swapan K and Natarajan, Srinivasan (2007) Synthesis, Structure, and Magnetic Properties of a Novel Pillared Layered Iron(III) Arsenate,$[4,4\prime-bpyH_2]_3$ $[Fe_9(H_2O)_6F_3(HAsO_4)_{12}(AsO_4)_2]$ $\bullet2H_2O$. In: The Journal of Physical Chemistry B, 111 (44). pp. 12700-12706.

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Abstract

A three-dimensional iron arsenate $[4,4\prime-bpyH_2]_3$ $[Fe_9(H_2O)_6F_3(HAsO_4)_{12}(AsO_4)_2]$ $\bullet2H_2O$ 1, has been synthesized using 4,4\prime-bipyridine as the templating agent under hydrothermal conditions. The structure is formed by $FeO_6$, $FeO_3F_3$ octahedral units connected with $HAsO_4$ and $AsO_4$ units, forming one- and two-dimensional units in which the one-dimensional units act as a pillar. The presence of face-shared Fe-dimer units in the onedimensional unit is noteworthy. Detailed magnetic studies indicate two possible magnetic interactions: antiferromagnetic interactions within the layer and a weak ferromagnetic polarization between the layers at very low temperatures through the Fe-dimer units.

Item Type:	Journal Article
Publication:	The Journal of Physical Chemistry B
Publisher:	American Chemical Society
Additional Information:	Copyright of this article belongs to American Chemical Society.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	18 Dec 2008 09:06
Last Modified:	19 Sep 2010 04:52
URI:	http://eprints.iisc.ac.in/id/eprint/16535

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