Accurate Redeterminations of 1,1'-Dibenzoylferrocene and (4-Nitrophenyl)ferrocene
Gallagher, John F. and Ferguson, George and Ahmed, S. Zaka and Glidewell, Christopher and Lewis, Arwel (1997) Accurate Redeterminations of 1,1'-Dibenzoylferrocene and (4-Nitrophenyl)ferrocene. Acta Crystallographica Section C, 53 (12). pp. 1772-1775. ISSN 0108-2701
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In the solid state, molecules of 1,1'-dibenzoylferrocene, [Fe(C₁₂H₉O)₂], (I), are linked to form infinite chains in the  direction via (cyclopentadienyl)C-H...O hydrogen bonds [C...O 3.354 (4) Å]. In the structure of (4-nitrophenyl)ferrocene, [Fe(C₅H₅)(C₁₁H₈NO₂)], (II), there are no C-H...O hydrogen bonds and molecules are separated by normal van der Waals distances. For earlier determinations see Struchkov [Dokl. Akad. Nauk SSSR (1956), 110, 67-70] for (I) and Roberts et al. [J. Chem. Soc. Dalton Trans. (1988), pp. 1549-1556] for (II).
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