4-Chloro-N-[4-(8-chloro-5H-dibenzo­[b,e][1,4]­diazepin-11-yl)-1-methylpiperazinio]benzamidate di­chloro­methane solvate

The structure of the title compound, C₂₅H₂₃Cl₂N₅O·CH₂Cl₂, confirms the presence of the buckled nature of the dibenzodiazepine nucleus, with the central seven-membered heterocycle in a boat conformation, the dihedral angle between the planes of the aromatic rings being similar to that found for the parent compound, clozapine and related structures. The piperazine ring displays an almost perfect chair conformation, with the methyl and chloro­benz­imide groups assuming equatorial and axial orientations, respectively, at the cationic nitro­gen site. At the other piperazine N atom, the dibenzodiazepine nucleus assumes an axial orientation. The relative positions of the dibenzodiazepine and piperazine ring systems is controlled by the planarity of the piperazine N atom in the amidine moiety.

O¹,O²:O³,O⁵-Bis(phenyl­boranediyl)-α-D-glucofuran­ose

The title compound, C₁₈H₁₈B₂O₆, was formed by the reaction between phenyl­boronic acid and D-glucose. The structure is analogous to those of D-glucoboronates previously prepared and characterized by NMR. In the crystal structure, mol­ecules are linked into one-dimensional chains along [100] via O—H...O hydrogen bonds [O...O = 2.8283 (17) Å].

Methyl 2-(3,5-dichloro­phen­yl)-5-dimethyl­amino-3-methyl-1,1-dioxo-1,2,3,4-tetra­hydro-1λ⁶,2,4,6-thia­triazine-3-carboxyl­ate

The title compound, C₁₃H₁₆Cl₂N₄O₄S, was formed by base-assisted N-alkyl­ation of [2-(3,5-dichloro­phen­yl)-1,1-dioxo-2,3-dihydro-1H-1λ⁶-1,2,3,5-thia­triazol-4-yl]dimethyl­amine with methyl 2-bromo­propanoate, followed by a novel base-promoted ring-expansion reaction, to form a relatively rare 1,1-dioxo-1,2,4,6-thia­triazine. The thia­triazine heterocycle adopts an envelope conformation. In the crystal structure, adjacent mol­ecules are linked by an N—H...O hydrogen bond to form chains parallel to the a direction.