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In the title compound, [Fe(C5H5)(C16H15O3)], the cyclo­penta­dienyl rings are in an eclipsed conformation and the benzene ring makes dihedral angles of 10.84 (9) and 12.35 (9)°, respectively, with the substituted and unsubstituted cyclo­penta­dienyl rings. In the crystal, mol­ecules form inversion dimers through pairs of O—H...O hydrogen bonds. Weak C—H...O hydrogen bonds are observed between the dimers.

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In the title compound, C34H32N2O7, the furan ring adopts a twist conformation and both the pyrrolidine rings adopt envelope conformations with O and C as flap atoms. The β-lactam ring makes a dihedral angles of 80.20 (10)° with the furan ring, of 75.55 (10)° with the pyrrolidine ring, of 12.26 (10)° with the meth­oxy­phenyl ring and of 73.77 (13)° with the phenyl ring. The O atom attached to the β-lactam ring deviates by 0.0385 (13) Å from the ring plane. The mol­ecular conformation is stabilized by intra­molecular O—H...N and C—H...O hydrogen bonds. The packing of the crystal is stabilized by inter­molecular C—H...O hydrogen bonds, which form a chain running along the b axis.

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The title compound, C19H18O3, crystallizes with three mol­ecules (A, B and C) in the asymmetric unit. The carbonyl O atom shows positional disorder over two sites in mol­ecules A and B; the site-occupancy ratios are 0.76 (3):0.24 (3) and 0.86 (3):0.14 (3), respectively. The ethyl­ene fragments in each mol­ecule have an E conformation, while the C—O—C—C torsion angles indicate near planarity. The dihedral angles formed by the aromatic rings are 20.0 (1), 23.7 (1) and 16.1 (1)° for mol­ecules A, B and C, respectively. Intra­molecular C—H...O hydrogen bonds occur in each mol­ecule.
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