An Octanuclear FeIII Compound Featuring a New Type of Double Butterfly Iron-Oxo Core

Synthesis of experimental models for molecular inorganic geochemistry—A review with examples

“…They also are interesting because of their similarity to the core of the iron storage protein Ferritin (Powell, 2004). In some instances unexpected but interesting products have been produced, for example, ½Fe 8 ðl 3 -OÞ 2 ðl 4 -OÞ 2 ðl 2 -OCH 2 t BuÞ 2 ðl 2 ÀO 2 CC 6 H 5 Þ 12 ðO 2 CC 6 H 5 Þ 2 ðHOCH 2 t BuÞ 2 is an octanuclear Fe(III) complex, which at the time of publication (Ammala et al, 2000) featured a new type of double butterfly iron-oxo core that was of interest to researchers developing molecular magnets or models for ferritin. These molecular magnets are suitable as experimental models for aqueous geochemists if their stability in water can be established.…”

Methanolysis and Phenolysis Routes to Fe6, Fe8, and Fe10 Complexes and Their Magnetic Properties: A New Type of Fe8 Ferric Wheel

“…These controlled alcoholysis reactions take place under milder conditions than the aforementioned metathesis reactions. Complexes obtained in this way include [Fe 6 O 2 (OMe) 12 (tren) 2 ] 2+ , [Fe 10 (OMe) 20 (O 2 CCH 2 Cl) 10 ], [Fe 8 O 4 (L) 2 (O 2 CPh) 14 (HL) 2 ] (HL = neopentanol), and [Fe 6 O 3 (O 2 CMe) 9 (OEt) 2 (bpy) 2 ] + . In these reactions, the treatment with an alcohol triggered the aggregation of small units into products with higher nuclearities.…”

Linking iron(iii) carboxylates into high-nuclearity complexes by using Bis-tris

“…13 Butterfly units have been shown to form from Fe(III) oxocentred triangle starting materials in the synthesis of an Fe 8 complex, which contains a double-butterfly chain-like structure. 14 In contrast, both 1 and 2 contain two Fe 4 units, which are aligned almost parallel to each other in a stacked arrangement (Fig. 5).…”