In the title compound, C(4)H(10)N(+)·C(12)H(9)O(2) (-)·C(12)H(10)O(2), the pyrrolidine ring adopts an envelope conformation and the dihedral angle between the planes of the two naphthalene ring systems is 8.34 (10)°. The crystal structure is stabilized by O-H⋯O and N-H⋯O hydrogen bonds.

The address of three of the authors in the paper by Shahani et al. [Acta Cryst. (2010), E66, o3020-o3021] is corrected.[This corrects the article DOI: 10.1107/S1600536810043886.].

IN THE TITLE COMPOUND [SYSTEMATIC NAME: 2,3-dibromo-3-(2-bromo-phen-yl)-1-(5-oxido-3-phenyl-1,2,3-oxadiazol-3-ium-4-yl)propan-1-one], C(17)H(11)Br(3)N(2)O(3), the oxadiazole ring is essentially planar, with a maximum deviation of 0.003 (1) Å. The -CHBr-CHBr- chain and bromo-phenyl ring are disordered over two sets of sites with a refined occupany ratio of 0.756 (5):0.244 (5). The central oxadia...

The complete molecule of the title compound, C(30)H(20)N(2)Se(2), is generated by a crystallographic inversion centre at the mid-point of the Se-Se bond. The dihedral angle between the isoquinoline-1-selenol group and the phenyl ring is 14.92 (2)°. The herringbone-like packing of the structure is supported by inter-molecular π-π stacking inter-actions with a shortest perpendicular distance betw...

In the title compound, C21H23ClN2O, the dihedral angle between the benzene rings is 83.2 (6)°, while the mean plane of the pyrazole ring [r.m.s. deviation = 0.043 (1) Å] makes dihedral angles of 3.4 (3) and 86.2 (1)° with the benzene rings. In the crystal, a pair of weak C-H⋯O inter-actions between the benzene ring and the propan-1-one group link the mol-ecules into an inversion dimer with an R...