1-(p-Bromo­phen­yl)-5-p-tosyl­perhydro­pyrrolo[3,4-b]pyrrole

In the title compound, C₁₉H₂₁BrN₂O₂S, the fused pyrrolidine rings adopt envelope conformations. The mol­ecular packing is stabilized by weak inter­molecular C—H...O inter­actions and van der Waals forces.

Risperidone N-oxide hydrogen peroxide methanol solvate

In the crystal structure of the title compound {systematic name: 4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-hydr­oxy-1-[2-(2-meth­yl-4-oxo-3,4,6,7,8,9-hexa­hydro-2H-pyrido[1,2-a]pyrimid­in-3-yl)eth­yl]piperidine N-oxide hydrogen peroxide methanol solvate}, C₂₃H₂₇FN₄O₃·H₂O₂·CH₃OH, the asymmetric unit contains one mol­ecule of risperidone N-oxide, one methanol solvent mol­ecule and one hydrogen peroxide mol­ecule. The piperidine ring adopts a chair conformation, while the tetra­hydro­pyridine ring has a sofa conformation. The hydrogen peroxide mol­ecule links the risperidone mol­ecules to form a chain. O—H...O and C—H...O inter­actions stabilize the crystal packing.

Olazipinium nicotinate

The crystal structure of the title compound, C₁₇H₂₁N₄S⁺·C₆H₄NO₂⁻, [systematic name: 1-methyl-4-(2-methyl-10H-thieno[2,3-b][1,5]benzodiazepin-4-yl)hexa­hydro­pyrazin-1-ium nicotinate] is reported. The central seven-membered heterocycle is in a boat conformation, while the piperazine ring displays a chair conformation with its methyl group oriented equatorially. The coulombic interaction between olanzapinium and nicotinate ions is supplemented by intra- and inter­molecular N—H...O hydrogen bonds, forming infinite chains along the c axis.