1,3,3-Trimeth­yl-6'-(4-phenyl­piperazin-1-yl)-2,3-dihydro­spiro­[1H-indole-2,3'-3H-naphth[2,1-b][1,4]oxazine]

The title compound, C₃₂H₃₂N₄O, a spiro­oxazine modified with a fused phen­yl-piperazin­yl-naphthalene moiety, has been characterized by X-ray crystallographic techniques. The piperazine ring is in a chair conformation, while the oxazine and pyrrolidine rings adopt envelope conformations.

N-Meth­yl-3-(4-bromo-1H-pyrrole-2-carbon­yl)amino­propionitrile

The title compound, C₉H₁₀BrN₃O, was synthesized by condensation of N-meth­yl-3-amino­propionitrile with 4-bromo-2-trichloro­acetyl­pyrrole, at room temperature, in 87.3% yield. Inter­molecular N—H...O hydrogen bonds give rise to dimers of the compound.

3-[(4-Bromo-1-methyl-1H-pyrrol-2-yl­carbonyl)­amino]­propanoic acid

The title compound, C₉H₁₁BrN₂O₃, was synthesized by condensation of β-alanine methyl ester with 4-bromo-1-methyl-2-(tri­chloro­acetyl)­pyrrole at room temperature. In the crystal structure, intermolecular N—H...O and O—H...O hydrogen-bond interactions link the mol­ecules into extended ribbons parallel to the a axis.

4,6-Dibenzo­yl-1,3-dimethyl­benzene

The title compound, C₂₂H₁₈O₂, contains three benzene rings that are not coplanar as a result of steric strain. The mol­ecules are packed in columns along the a axis in the crystal structure, and classical hydrogen bonds are not found.

3-[(4,5-Dibromo-1-meth­yl-1H-pyrrole-2-carbon­yl)amino]propanoic acid

The title compound, C₉H₁₀Br₂N₂O₃, was synthesized by condensation of β-alanine meth­yl ester with 4,5-dibromo-1-meth­yl-2-trichloro­acetyl­pyrrole at room temperature, followed by saponification and acidification. In the crystal structure, inter­molecular N—H...O and O—H...O hydrogen-bond inter­actions link the mol­ecules into extended ribbons parallel to the a axis.

Chloro­bis(N,N-di-n-butyl­dithio­carbamato)phenyl­tin(IV)

The title complex, [Sn(C₆H₅)(C₉H₁₈NS₂)₂Cl], contains two bidentate dithio­carbamate groups, resulting in a distorted SnS₄CCl octa­hedral geometry for the Sn atom.

Ethyl 2-(5,7-dimethyl-1,2,4-triazolo[1,5-a]pyrimidin-2-yl­oxy)benzoate

In the title compound, C₁₆H₁₆N₄O₃, which displays good herbicidal activity, the planar bicyclic triazolopyrimidine system is bound to an ethyl benzoate moiety via an oxo bridge, with a dihedral angle of 73.98 (2)° between the bicylic triazolopyrimidine system and the benzene ring. In the crystal structure, mol­ecules are linked by inter­molecular C—H...O hydrogen bonds and π–π stacking inter­actions between the triazolopyrimidine rings.

Methyl 2-benz­yloxy-6-(2-methyl-1,3-dioxolan-2-yl)benzoate monohydrate

The crystal structure of the title compound, C₁₂H₁₄O₅·H₂O, displays a supramolecular structure via O—H...O hydrogen bonds. No π–π stacking is observed.