720 C.P. Raptopoulou et al. / Polyhedron 24 (2005) 711–721<strong>iron</strong>(<strong>III</strong>) ions is depicted <strong>in</strong> the Mössbauer spectra. Themagnetic properties are <strong>in</strong>terpreted with<strong>in</strong> the context ofa trimer with exchange constants typical for complexeswith the [Fe 3 (l 3 -O)] 7+ core and a S = 1/2 ground state.The crystal structure analysis of 1 reveals <strong>in</strong>termolecular<strong>in</strong>teractions between the trimers form<strong>in</strong>g 1D polymericcha<strong>in</strong>s. In 2 the <strong>in</strong>termolecular <strong>in</strong>teractions lead to theformation of a 2D network. These <strong>in</strong>teractions give riseto broad EPR spectra <strong>in</strong> the solid state. The salox 2 ligandadopts the usual l 2 :g 1 :g 1 :g 1 coord<strong>in</strong>ation mode,while the possibility of further use of the oximate oxygenatom to bridge to a second metal is left open. In thatsense, compounds 1 and 2 can be considered as importantstart<strong>in</strong>g materials for the synthesis of higher nuclearityclusters under certa<strong>in</strong> reaction conditions.AcknowledgementsThe Greek General Secretariat of Research andTechnology is acknowledged for support<strong>in</strong>g the presentwork with<strong>in</strong> the frame of the Competitiveness EPAN2000–2006, Centers of Excellence # 25. We also thankDr. D. Stamopoulos for the magnetic measurements.Appendix A. Supplementary dataFull crystallographic details have been deposited <strong>in</strong>CIF format with the Cambridge Crystallographic DataCentre. Copies of the data can be obta<strong>in</strong>ed free ofcharge on request from the CCDC, 12 Union Road,Cambridge CB2 1EZ, UK (fax: +44 1223 336408,e-mail: deposit@ccdc.cam.ac.uk or www. at http://www.ccdc.cam.ac.uk) quot<strong>in</strong>g the deposition numbersCCDC 261079 (1), and CCDC 261080 (2). Four figuresshow<strong>in</strong>g the molecular and lattice structure of 2, theMössbauer spectra from powder samples of 1 and 2 at4.2 K, and the surface error plot of J versus J 0 (withg = 2.00), as well as a table of the bond distances andangles around the coord<strong>in</strong>ation sphere of the three<strong>iron</strong>(<strong>III</strong>) ions <strong>in</strong> 1, are also given as supplementary material.Supplementary data associated with this article canbe found, <strong>in</strong> the onl<strong>in</strong>e version, at doi:10.1016/j.poly.2005.02.002.References[1] O. Kahn, Molecular Magnetism, VCH-Verlagsgesellschaft,We<strong>in</strong>he<strong>in</strong>, 1991.[2] D. Luneau, H. Oshio, H. Okawa, S. Kida, J. Chem. Soc., DaltonTrans. (1990) 2283.[3] P. Chaudhuri, M. W<strong>in</strong>ter, P. Fleischhauer, W. Haase, U. Florke,H.-J. Haupt, J. Chem. Soc., Chem. Commun. (1990) 1728.[4] P. Chaudhuri, M. W<strong>in</strong>ter, B.P.C. Della Vedova, E. 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