In the title compound, C₂₀H₁₄BrN₃O₃S, the mol­ecule adopts an E configuration about the central C=N double bond. The chromene ring system and the thia­zole ring are approximately planar [maximum deviations = 0.029 (3) and 0.007 (3) Å, respectively]. The chromene ring system is inclined at angles of 7.37 (12) and 13.90 (13)° with respect to the thia­zole and benzene rings, respectively, while the thia­zole ring makes a dihedral angle of 12.58 (15)° with the benzene ring. In the crystal, mol­ecules are connected by N—HO hydrogen bonds, forming C(8) supra­molecular chains along the c axis.

In the title compound, C₂₀H₁₅N₃O₃S, an intra­molecular C—HO hydrogen bond generates an S(6) ring motif. The chromene ring system is inclined at dihedral angles of 14.21 (9) and 9.91 (10)°, respectively, with respect to the thia­zole and benzene rings. The thia­zole ring makes a dihedral angle of 24.06 (11)° with the benzene ring. In the crystal structure, O—HO hydrogen bonds link the mol­ecules into a zigzag chain along [20]. Weak N—HO and C—HO inter­actions connect the chains into a three-dimensional network. π–π stacking inter­actions with a centroid–centroid distance of 3.4209 (14) Å are also observed between the chains.

In the title compound, C₂₅H₁₆BrN₃O₂S·CHCl₃, the thia­zole ring is approximately planar [maximum deviation = 0.002 (3) Å] and makes dihedral angles of 10.75 (14) and 87.75 (15)/2.80 (14)° with the pyran ring system and the two terminal phenyl rings, respectively. The solvent mol­ecule is disordered over two sets of sites, with refined occupancies of 0.639 (7) and 0.361 (7). In the crystal, mol­ecules are connected via pairs of weak C—HO inter­actions, forming centrosymmetric dimers. An intra­molecular C—HO hydrogen bond generates an S(6) ring motif.

In the title compound, C₁₉H₁₁N₃O₂SClBr, the chromene ring system and the thia­zole ring are each approximately planar, with maximum deviations of 0.033 (3) Å and 0.006 (3) Å, respectively. The mol­ecule adopts an E configuration about the central C=N double bond. The central thia­zole ring makes dihedral angles of 9.06 (14)° and 12.07 (11)° with the chloro-substituted phenyl ring and the chromene ring, respectively. The mol­ecular structure features a short C—HO contact, which generates an S(6) ring motif. The crystal structure is stabilized by inter­molecular N—HO hydrogen bonds, which link the mol­ecules into chains along the b axis. π–π stacking inter­actions [centroid-centroid distance = 3.4813 (15) Å] are also present.

In the title compound C₁₉H₁₁N₃O₂SClBr·C₂H₆OS, the mol­ecule adopts an E configuration about the central C=N double bond. The chromene ring system and the thia­zole ring are approximately planar, with maximum deviations of 0.027 (2) and 0.003 (1) Å, respectively. The central thia­zole ring makes dihedral angles of 21.82 (9) and 5.88 (7)° with the chloro-substituted phenyl ring and the chromene ring, respectively. In the crystal, mol­ecules are connected via N—HO, N—HS and C—HO hydrogen bonds, forming supra­molecular chains along the c axis. An intra­molecular C—HO hydrogen bond occurs. π–π inter­actions are observed between the thia­zole and phenyl rings [centroid–centroid distance = 3.6293 (10) Å]. A short BrCl contact of 3.37 (6) Å also occurs.

In the title compound, C₁₉H₁₂FN₃O₂S, the chromene ring system and the thia­zole ring are approximately planar [maximum deviations of 0.023 (3) Å and 0.004 (2) Å, respectively]. The chromene ring system is inclined at angles of 4.78 (10) and 26.51 (10)° with respect to the thia­zole and benzene rings, respectively, while the thia­zole ring makes a dihedral angle of 23.07 (12)° with the benzene ring. The mol­ecular structure is stabilized by an intra­molecular C—HO hydrogen bond, which generates an S(6) ring motif. The crystal packing is consolidated by inter­molecular N—HO hydrogen bonds, which link the mol­ecules into chains parallel to [100], and by C—Hπ and π–π [centroid–centroid distance = 3.4954 (15) Å] stacking inter­actions.

In the title compound, C₂₀H₁₅N₃O₃S, the thia­zole ring is approximately planar, with a maximum deviation of 0.003 (1) Å, and makes dihedral angles of 7.44 (6) and 1.88 (6)° with the hy­droxy-substituted phenyl ring and the pyran ring, respectively. The hydroxyl group is disordered over two sets of sites, with an occupancy ratio of 0.567 (3):0.433 (3). In the crystal, the major disorder component mol­ecules are connected via bifurcated (three-centre) O—HO and C—HO hydrogen bonds, generating R¹₂(6) motifs and resulting in supra­molecular chains along the a axis. In the minor occupancy component, however, mol­ecules are connected via C—HO hydrogen bonds, forming supra­molecular chains along the b axis. Furthermore, the crystal structure is stabilized by π–π inter­actions between the thia­zole rings [centroid–centroid distance = 3.5476 (7) Å].

The title compound [systematic name: 5,6,7-trimeth­oxy-2-(7-meth­oxy-1,3-dihydro-2-benzofuran-5-yl)-4H-chromen-4-one monohydrate], C₂₀H₁₈O₈·H₂O, was isolated from the popular Chinese medicinal plant Entada phaseoloides. In the crystal, inversion-related mol­ecules are joined by pairs of weak C—HO hydrogen bonds. The dimers are further inter­connected by a bridging water mol­ecule via weak C—HO_water and pairs of (O—H)_waterO hydrogen bonds into a linear tape running parallel to the b axis.

The mol­ecule of the title compound, [Cu₂I₂(C₇H₁₈S₃Si)₂], is dimeric. It lies on an inversion center and contains roughly tetrahedral copper centers surrounded by two thio­ether groups and two bridging iodo ligands. The CuCu separation, 2.862 (2) Å, is indicative of a weak interaction between the two metal atoms and is not unusual for this type of compound.