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Sunkel, Karlheinz and Klein-Hessling, Christian (2021): Molecular and Crystal Structures of Some Fluorocymantrenes. In: Journal of Chemical Crystallography, Vol. 52, No. 2: pp. 131-139

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The crystal and molecular structures of the fluorocymantrenes [(C5H4F)Mn(CO)(3)] and [(C5H5-nFn)Mn (CO)(2)(PPh3)] (n = 1-3) have been studied. The influence of the phosphine for carbonyl substitution on the bond parameters is larger than the influence of the increasing fluorine content. In most cases the Mn -> P vector is in a transoid position relative to the fluorine substituents, and therefore the conformational parameters of the PPh3 propeller are in these cases very similar. The crystal structures show many intermolecular C-H center dot center dot center dot O hydrogen bonds and only very few C-H center dot center dot center dot F hydrogen bonds. [GRAPHICS]

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