Abstracts 2005

Abstract of Publication No. 532

Gaël Labat, Colette Boskovic and Hans U. Güdel
Hexakis(m4-2-amino-2-methylpropane-1,3-diolato)hexachloroheptairon(II,III) acetonitrile disolvate monohydrate
Acta Cryst. E 61, m611-m613 (2005)      Full Text (PDF)      DOI-Link      Crystal Structure Data (CIF format)     

Abstract: Single crystals of a new mixed-valence compound, [Fe7(C4H9NO2)6Cl6]2CH3CNH2O, were synthesized by solvothermal methods. The crystal structure consists of discrete heptanuclear complexes which are linked by weak intermolecular C-HCl hydrogen bonds to form a two-dimensional network. In each complex, a central Fe atom is connected to six surrounding Fe centres by alkoxo-type O atoms from the organic ligand. Bond-valence sum calculations indicate that the central Fe ion is FeII, as are two of the outer Fe centers, while the remaining four Fe centers are FeIII. Although the outer Fe atoms are crystallographically equivalent, it is uncertain whether this arises from positional disorder or charge delocalization. The molecular structure has S6 point symmetry.

Last modified: 13.12.11 by Gabriela Frei