3,5-Dimethyl-1-{2-[(5-methyl-1,3,4-thia­diazol-2-yl)sulfan­yl]acet­yl}-2,6-diphenylpiperidin-4-one

In the title compound, C₂₄H₂₅N₃O₂S₂, the piperidine ring adopts a distorted boat conformation. The phenyl rings subtend angles of 75.6 (1)° and 86.3 (1)° with the mean plane of the piperidine ring. In the crystal, mol­ecules are linked through a network C—H...N hydrogen bonds, forming zigzag chains along [100]. The thia­diazol ring methyl group is disordered over two positions with an occupancy ratio of 0.69 (4):0.31 (4).

3,3′-{[(Biphenyl-2,2′-di­yl)bis­(methyl­ene)]bis­(­oxy)}bis­[N-(4-chloro­phen­yl)benzamide]

In the title compound, C₄₀H₃₀Cl₂N₂O₄, the two benzene rings of the biphenyl unit are twisted with respect to each other, making a dihedral angle of 73.07 (4)°. The benzene rings of the benzamide groups form dihedral angles of 77.09 (5) and 55.48 (6)° with the central biphenyl moiety. In the crystal, mol­ecules are linked through N—H...O hydrogen bonds to form a fused R₂²(38) ring motif which forms a supermolecular ribbon network extending along the [100] plane. In the two 4-chloro­phenyl rings, the five C atoms and their attached H atoms are disordered over two sets of sites, with site-occupancy factors of 0.657 (15):0.343 (15) and 0.509 (13):0.491 (13).