In the title compound, [Fe(C(5)H(5))(C(29)H(20)NO(3))], the acenaphthyl-ene ring system makes a dihedral angle of 83.77 (3)° with the indane-1,3-dione ring system. The central pyrrolidine ring exhibits a twist conformation. In the crystal, mol-ecules are linked by a weak inter-molecular C-H⋯O inter-action into a chain along the b axis. Two weak intra-molecular C-H⋯O inter-actions are also present.