2-(2,5-Dioxotetra­hydro­furan-3-yl)isoindoline-1,3-dione

In the title compound, C12H7NO5, the dihedral angle between the isoindole-1,3-dione plane and the least-squares plane of the furan ring is 89.2 (2)°. In the crystal structure, mol­ecules are linked through inter­molecular C—H⋯O hydrogen bonds, forming centrosymmetric dimers

(E)-N-[4-(Methyl­sulfon­yl)benzyl­idene]aniline

The mol­ecule of the title compound, C14H13NO2S, displays a trans configuration with respect to the C=N double bond. The dihedral angle between the two aromatic ring planes is 62.07 (18)°

(E)-2-Methyl-N-[4-(methyl­sulfon­yl)benzyl­idene]aniline

Mol­ecules of the title compound, C15H15NO2S, display an E configuration with respect to the C=N double bond. The crystal structure is stabilized by weak C—H⋯O hydrogen bonds. The dihedral angle between the two aromatic ring planes is 50.41 (12)°

(E,E)-N,N′-Bis[4-(methyl­sulfon­yl)benzyl­idene]ethane-1,2-diamine

In the crystal structure of the title Schiff base compound, C18H20N2O4S2, the mol­ecule lies across a crystallographic inversion centre. The torsion angle of the N—C—C—N fragment is 180°, as the inversion centre bis­ects the central C—C bond. The crystal packing is stabilized by C—H⋯O hydrogen bonds and aromatic π–π stacking inter­actions with a centroid–centroid distance of 3.913 (2) Å

4-(Methyl­sulfon­yl)benzaldehyde

In the crystal of the title compound, C8H8O3S, the mol­ecules are linked into a three-dimensional array by inter­molecular C—H⋯O hydrogen bonds

2-Amino-4-methyl­benzene­sulfonamide

In the crystal of the title compound, C7H10N2O2S, the mol­ecules are linked by two strong N—H⋯O hydrogen bonds. The mol­ecular structure is stabilized by an intra­molecular N—H⋯O hydrogen bond. The C/S/N plane makes a dihedral angle of 69.7 (2)° with the aromatic ring plane

5-Bromo-2-meth­oxy-4-{[(4-meth­oxy­phen­yl)imino]­meth­yl}phenol monohydrate

The crystal structure of the title compound, C15H14BrNO3·H2O, has a trans configuration about the central C=N double bond. An intra­molecular O—H⋯O hydrogen bond occurs in the main mol­ecule. The crystal packing is stabilized by strong O—H⋯O and O—H⋯N hydrogen bonds

4-[(E)-(3-Chloro-4-methyl­phen­yl)imino­meth­yl]-2-methoxy-3-nitro­phenyl acetate

The title compound, C17H15ClN2O5, displays a trans-configuration with respect to the C=N double bond. The mol­ecule is twisted, the dihedral angle between the mean planes of the two benzene rings being 18.70 (12)°. The nitro, meth­oxy and acetyl groups are oriented at 80.70 (11), 35.2 (2) and 72.35 (10)°, respectively, to the benzene ring to which they are bonded. The crystal structure is stabilized by weak C—H⋯O hydrogen-bonding contacts

N-[(E)-4-(Methyl­sulfon­yl)benzyl­idene]-3-nitro­aniline

In the title compound, C14H12N2O4S, the dihedral angle between the two aromatic rings is 35.65 (12)°. The crystal packing is stabilized by weak C—H⋯O hydrogen bonds and aromatic π–π ring stacking inter­actions [minimum ring centroid separation = 3.697 (3) Å]