Synthesis, crystal structure and Hirshfeld surface analysis of (3)-4-[(4-amino-1,2,5-oxa-diazol-3-yl)amino]-3-bromo-1,1,1-tri-fluoro-but-3-en-2-one.

In the title compound, CHBrFNO, the oxa-diazole ring is essentially planar with a maximum deviation of 0.003 (2) Å. In the crystal, mol-ecular pairs are connected by N-H⋯N hydrogen bonds, forming dimers with an (8) motif.

Synthesis, crystal structure and Hirshfeld surface analysis of 3-(4-fluoro-phen-yl)-2-formyl-7-methyl-imidazo[1,2-]pyridin-1-ium chloride monohydrate.

In the title salt, CHFNO·Cl·HO, the imidazo[1,2-]pyridin-1-ium ring system of the cation is almostly planar [maximum deviaition = -0.047 (2) Å for the ring C atom with the attached arene ring] and forms a dihedral angle of 61.81 (6)° with the plane of the fluoro-phenyl ring.

Synthesis, crystal structure and Hirshfeld surface analysis of (2,2')-2,2'-(3-meth-oxy-3-phenylpropane-1,2-diyl-idene)bis-(hydrazine-1-carbo-thioamide) di-methyl-formamide monosolvate.

The overall mol-ecular configuration of the title compound, CHNOS·CHNO, is stabilized in the solid state by intra-molecular C-H⋯N, C-H⋯O, N-H⋯N and N-H⋯O inter-actions, forming (5) ring motifs. In the crystal, mol-ecules are linked to each other and solvent di-methyl-formamide mol-ecules by N-H⋯S, N-H⋯O, C-H⋯O and C-H⋯S hydrogen bonds, forming a three dimensional network. The phenyl ring of the title compound is disordered over two sites with an occupancy ratio of 0.

Crystal structure and Hirshfeld surface analysis of 2-(4-chloro-phen-yl)-4-(di-meth-oxy-meth-yl)-5-phenyl-1,3-thia-zole.

In the title compound, CHClNOS, the thia-zole ring subtends dihedral angles of 13.12 (14) and 43.79 (14) ° with the attached chloro-phenyl and phenyl rings, respectively.

Crystal structure and Hirshfeld surface analysis of 2,2,2-tri-fluoro-1-(7-methyl-imidazo[1,2-]pyridin-3-yl)ethan-1-one.

The bicyclic imidazo[1,2-]pyridine core in the mol-ecule of the title compound, CHFNO, is planar within 0.004 (1) Å. In the crystal, the mol-ecules are linked by pairs of C-H⋯N and C-H⋯O hydrogen bonds, forming strips.