Received 24 March 2008
The title compound, [Fe(C12H8N2)3]3[FeW12O40]·2H2O, was prepared under hydrothermal conditions. The discrete Keggin-type [FeW12O40]6- heteropolyoxoanion has threefold symmetry, with the FeII atom located on the threefold rotation axis. The central FeO4 tetrahedron in the anion shares its O atoms with four W3O13 trinuclear units, each of which is made up of three edge-shared WO6 octahedral units. The FeII atom in the complex cation, viz [Fe(phen)3]2+ (phen is 1,10-phenanthroline), shows a slightly distorted octahedral geometry defined by six N atoms from three phen ligands. The polyoxoanions pack together with the cations, with the disordered water molecules located in voids; the site occupancy factor for each water O atom is 0.33.
Data collection: SMART (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL-Plus (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HY2126 ).
This work was supported by the Analysis and Testing Foundation of Northeast Normal University, Changchun, China.
Brown, I. D. (2002). The Chemical Bond in Inorganic Chemistry: the Bond Valence Model. Oxford University Press.
Bruker (2007). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Flack, H. D. (1983). Acta Cryst. A39, 876-881.
Misono, M. (1987). Cat. Rev. Sci. Eng. 29, 269-321.
Pope, M. T. (1983). Heteropoly and Isopoly Oxometalates. Berlin: Springer.
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.