organic compounds
Open access
The title compound, C7H8NO2+·NO3−·C7H7NO2, exists in the form of a protonated dimer of two anilinium-3-carboxylate molecules related by an inversion center, and a nitrate anion located on a twofold rotation axis. The bridging H atom occupies, with equal probability, the two sites associated with the carboxyl atoms. In addition to the strong O—HO hydrogen bond, in the crystal, the various units are linked via N—HO and C—HO hydrogen bonds forming a three-dimensional structure.
organic compounds
Open access
In the title compound, C14H10ClNOS, the dihedral angle between the benzothiazole ring system and the methoxy-substituted benzene ring is 8.76 (16)°. In the crystal, molecules are stacked in columns along the c axis and no significant intermolecular interactions are observed.
organic compounds
Open access
In the title compound, C16H13Cl2N3O2S, the dihedral angle between the aromatic rings is 6.62 (2)° and the C=N—N=C torsion angle is 176.2 (4)°. The thiazine ring shows an envelope conformation, with the S atom displaced by 0.633 (6) Å from the mean plane of the other five atoms (r.m.s. deviation = 0.037 Å). The Cl atom is an an axial conformation and is displaced by 2.015 (6) Å from the thiazine ring plane. In the crystal, molecules are linked by C—HO interactions, generating a three-dimensional network. Very weak aromatic π–π stacking interactions [centroid–centroid separations = 3.928 (2) Å] are also observed.
metal-organic compounds
Open access
The asymmetric unit of the title compound, (C6H18N2)[ZnCl4], consists of one tetrachloridozincate anion and two half-N,N,N′N′-tetramethylethylenediammonium cations. Each of the two diammonium cations is located about an inversion center and one of them is disordered over two sets of sites in a 0.780 (17):0.220 (17) ratio. The ZnII atom has a slightly distorted tetrahedral coordination environment. The cations and anions are connected via N—HCl hydrogen bonds into chains extending along [0-11].