organic compounds
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—HO and C—HO interactions stabilize the crystal packing.
organic compounds
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—HO hydrogen bonds, forming infinite chains along the c axis.