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Lawrence F. Dahl Created 2026-10-20 Updated 2026-11-05
Lawrence F. Dahl investigated the structure of an iron carbonyl tetramer by diffraction. Four bonded iron atoms form a tetrahedron, while four triply bridging carbonyl carbon atoms form an interpenetrating tetrahedron, connecting an unusual molecular geometry with metal–metal bonding.[ref]
Structural Characterization of the Cyclopentadienyliron Carbonyl Tetramer, Fe4(eta5-C5H5)4(CO)4. A Cubane-Type Structure Containing a Completely Bonding Tetrametal Cluster Unit by Melvin A. Neuman and others. 1972, pp.3383–3388: original diffraction structure and tetrametal cluster unit
Journal of the American Chemical Society 94, 3383–3388. Original diffraction study: four bonded Fe vertices form a tetrahedron; four triply bridging carbonyl carbons form an interpenetrating tetrahedron.