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The syntheses, crystal structures, and physical properties of HFe19 O14 (OEt) 30 and Fe11 (OEt) 24 ∞ are reported. HFe19 O14 (OEt) 30 has an octahedral shape. Its core with a central Fe metal ion surrounded by six μ6 -oxo ligands is arranged in the rock salt structure. Fe11 (OEt) 24 ∞ is a mixed-valence coordination polymer in which Fe (III) metal ions form three 3D interpenetrating (10, 3) -b nets. The arrangement of the Fe (III) ions can also be compared to that of Si ions in α-ThSi2. Thus, the described structures are at the interface between molecular and solid-state chemistry.
Nachtigall et al. (Wed,) studied this question.