3-Phenyl-1-[2-(3-phenyl­isoquinolin-1-yl)­diselan­yl]isoquinoline

The complete molecule of the title compound, C30H20N2Se2, is generated by a crystallographic inversion centre at the mid-point of the Se—Se bond. The dihedral angle between the isoquinoline-1-selenol group and the phenyl ring is 14.92 (2)°. The herringbone-like packing of the structure is supported by inter­molecular π–π stacking inter­actions with a shortest perpendicular distance between isoquinoline groups of 3.514 Å; the slippage between these ring systems is 0.972 Å, and the distance between the centroids of the six-membered carbon rings is 3.645 (3) Å

1-(4-Chloro­phen­yl)-2-[(3-phenyl­isoquinolin-1-yl)sulfan­yl]ethanone

The title compound, C23H16ClNOS, exhibits dihedral angles of 11.73 (1) and 66.07 (1)°, respectively, between the mean plane of the isoquinoline system and the attached phenyl ring, and between the isoquinoline system and the chloro­phenyl ring. The dihedral angle between the phenyl and chlorophenyl rings is 54.66 (1)°

2-Chloro-8-methoxy­quinoline-3-carbaldehyde

In the title compound, C11H8ClNO2, the quinoline fused-ring system is almost planar (r.m.s. deviation = 0.020 Å). The formyl group is slightly bent out of the quinoline plane [deviation of the O atom = 0.371 (2) Å]

Ethyl 6-chloro-2-methyl-4-phenyl­quinoline-3-carboxyl­ate

In the title compound, C19H16ClNO2, the quinoline ring system is planar (r.m.s. deviation = 0.008 Å). The phenyl group and the –CO2 fragment of the ester unit form dihedral angles of 60.0 (1) and 60.5 (1)°, respectively, with the quinoline ring system

1,3,6-Trimethyl­pyrano[4,3-b]pyrrol-4(1H)-one

All the non-H atoms of the title compound, C10H11NO2, are almost coplanar [maximum deviation = 0.040 (3) Å]. The crystal structure is stabilized by C—H⋯O hydrogen bonds

2-Chloro­quinoline-3-carbaldehyde

The quinolinyl fused ring system of the title compound, C10H6ClNO, is planar (r.m.s. deviation = 0.018 Å); the formyl group is slightly bent out of the plane of the fused ring system [C—C—C—O torsion angle = 8.2 (3)°]

1-(3,5-Dimethyl-1H-pyrazol-1-yl)-3-phenyl­isoquinoline

The mol­ecular conformation of the title compound, C20H17N3, is stabilized by an intramolecular C—H⋯N inter­action. The crystal structure shows inter­molecular C—H⋯π inter­actions. The dihedral angle between the isoquinoline unit and the phenyl ring is 11.42 (1)° whereas the isoquinoline unit and the pendent dimethyl pryrazole unit form a dihedral angle of 50.1 (4)°. Furthermore, the angle between the mean plane of the phenyl ring and the dimethyl pyrazole unit is 47.3 (6)°

2-[2-(Cyclo­hexyl­carbon­yl)phen­yl]-1-phenyl­ethanone

The title diketone, C21H22O2, features a phenyl­ene ring having benzoyl­methyl and cyclo­hexa­noyl substituents ortho to each other. The cyclo­hexyl ring adopts a chair conformation with the ketonic group occupying an equatorial position; the four-atom –C(O)–C ketonic unit is twisted out of the plane of the phenyl­ene ring by 34.9 (1)°

2-Chloro-7,8-dimethyl­quinoline-3-carbaldehyde

All the non-H atoms of the title compound, C12H10ClNO, lie on a crystallographic mirror plane orientated perpendicular to the crystallographic b axis

5-Phenyl-3-(2-thien­yl)-1,2,4-triazolo[3,4-a]isoquinoline

In the title mol­ecule, C20H13N3S, the triazoloisoquinoline ring system is approximately planar, with an r.m.s. deviation of 0.045 Å and a maximum deviation of 0.090 (2) Å from the mean plane for the triazole ring C atom which is bonded to the thio­phene ring. The phenyl ring is twisted by 52.0 (1)° with respect to the mean plane of the triazoloisoquinoline ring system. The thio­phene ring is rotationally disordered by approximately 180° over two sites, the ratio of refined occupancies being 0.73 (1):0.27 (1)