title: Ethyl and isopropyl 4-ferrocenyl-benzoate.
abstract: The title compounds, [Fe(C(5)H(5))(C(14)H(13)O(2))] and [Fe(C(5)H(5))(C(15)H(15)O(2))], respectively, contain the ferrocenyl eta(5)(C(5)H(4)) and phenylene -C(6)H(4)- rings in a nearly coplanar arrangement, with interplanar angles of 6.88 (12) and 10.5 (2) degrees, respectively. Molecules of the ethyl ester form dimers through eta(5)(C(5)H(5))C-H...O=C hydrogen bonds, with graph set R(2)(2)(20), and, together with Csp(3)-H.pi(C(5)H(5)) interactions, generate a one-dimensional column (irregular ladder). Molecules of the isopropyl ester aggregate through eta(5)(C(5)H(5))C-H.pi(C(6)H(4)) interactions.
authors.affiliation: School of Chemical Sciences, National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Ireland.
authors.forename: Frankie P
authors.initials: FP
authors.lastname: Anderson
authors.forename: John F
authors.initials: JF
authors.lastname: Gallagher
authors.forename: Peter T M
authors.initials: PT
authors.lastname: Kenny
authors.forename: Clodagh
authors.initials: C
authors.lastname: Ryan
authors.forename: David
authors.initials: D
authors.lastname: Savage