The structures of [Fe(CO) 3 (η 4 -6- exo -(OH)cyclohepta-2,4-dien-1-one] [monoclinic, a = 6.6080(2), b = 11.9177(3), c = 13.1157(4), β = 102.590(3) space group P2 1 /c] and [Fe(CO) 3 (η 4 -6- exo -(OD)cyclohepta-2,4-dien-1-one] [monoclinic, a = 6.5999(3), b = 11.8947(4), c = 13.1040(5), β = 102.497(4) space group P2 1 /c] have been determined. There is moderate intermolecular hydrogen bonding observed between the alcohol and the ketone. The iron centers adopt a slightly distorted square pyramidal geometry.
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Schwanitz et al. (2025) studied this question.
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