Physico-chemical properties and X-ray study of trinuclear carboxylate [Fe3O(CH3COO)(6)(H2O)(3)](2)[PtCl6]center dot 8H(2)O

Trinuclear carboxylate compound [Fe3O(CH3COO)(6)(H2O)(3)](2)[PtCl6].8H(2)O has been studied by Mossbauer spectroscopy, magnetochemistry, thermal analy sis and X-ray crystallography. Crystal data: monoclinic, space group P2(1)/ n a = 10.505(2), b = 14.278(3), c = 19.885(4) Angstrom, beta = 96.00(3)degr ees and Z = 2. The final R-value is 0.027 for 4606 reflections with I great er than or equal to 2 sigma(I). The crystal consists of the complex [Fe3O(C H3COO)(6)(H2O)(3)](+) cations, centrosymmetric [PtCl6](2-) anions and water molecules. The [Fe3O(CH3COO)(6)(H2O)(3)](+) cation has the typical structu re of a trinuclear iron(III) compound with mu(3)-O bridge. All crystal comp onents are connected via a system of hydrogen bonds into a 3D network. Moss bauer spectrum displays at room temperature a single quadrupole doublet wit h an isomer shift of 0.70 mm/s and quadrupole splitting of 0.48 mm/s, consi stent with high-spin Fe(III). mu(eff) per Fe atom (3.25 mu(B) at 293 K and 2.23 mu(B) at 120 K), indicate the antiferromagnetic coupling between the p aramagnetic iron ions with J = -31 cm(-1).