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Updated: May 26, 2026

Preparation of 6-aminocyclohepta-2,4-dien-1-one Derivatives via Tricarbonyl(tropone)iron
Published on: August 12, 2019
(RS)-Tricarbon-yl(η-1,3-diacet-oxy-5,5-dimethyl-cyclo-hexa-1,3-diene)iron(0)
Steffen Romanski1, Jörg-M Neudörfl, Hans-Günther Schmalz
1Department für Chemie der Universität zu Köln, Greinstrasse 4, 50939 Köln, Germany.
Abstract:
In the title compound, [Fe(C(12)H(16)O(4))(CO)(3)], the diene moiety of the mol-ecule is virtually planar, with a C-C-C-C torsion angle of -1.4 (2)°. The six-membered ring exhibits a boat conformation, with torsion angles of 46.2 (2) and 46.5 (3)° for a double-bond and the two attached Csp(3) atoms. The Fe atom is coordinated to all four of the diene C atoms, with bond lengths between 2.041 (2) and 2.117 (2) Å. The Fe(CO)(3) tripod adopts a conformation with one CO ligand eclipsing the Csp(3)-Csp(3) single bond.
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