Abstract
In the title compound, [CoFe2(C5H5)2(C9H5F3O2)2(H2O)2], the central Co atom has an octa-hedral coordination geometry defined by two chelating tri-fluoro-methyl-β-diketone ferrocene ligands and two aqua ligands, with the latter in a cis disposition. The Cp rings in both ferrocene groupings are close to eclipsed. In the crystal, O-H⋯O hydrogen bonds link the mol-ecules into [100] chains.
Highlights
In the title compound, [CoFe2(C5H5)2(C9H5F3O2)2(H2O)2], the central Co atom has an octahedral coordination geometry defined by two chelating trifluoromethyl- -diketone ferrocene ligands and two aqua ligands, with the latter in a cis disposition
O—HÁ Á ÁO hydrogen bonds link the molecules into [100] chains
The cobalt(II) atom has a octahedral coordination environment defined by two trifluoromethyl- -diketone ferrocene ligands and two water ligands (Fig. 1) with the water molecules in a cis disposition: the dihedral angle between the carbon-atom skeletons of the diketone ligands is 81.73 (12)
Summary
-Diketones are good chelating ligands for transition-metal ions and rare-earth metal ions and can possess pendant groups such as ferrocene. As part of our work in this area, we describe the synthesis and structure of the title cobalt(II) complex. The cobalt(II) atom has a octahedral coordination environment defined by two trifluoromethyl- -diketone ferrocene ligands and two water ligands (Fig. 1) with the water molecules in a cis disposition: the dihedral angle between the carbon-atom skeletons of the diketone ligands is 81.73 (12). The Cp rings of both ferrocene groups are in nearly eclipsed conformations. The molecules are linked into [100] chains by O—HÁ Á ÁO hydrogen bonds arising from the water molecules (Table 1, Fig. 2); an intramolecular C—HÁ Á ÁO and an intermolecular C—HÁ Á ÁF link are present.
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