Crystal structure and Hirshfeld surface of 5-bromo­salicylic acid di­methyl­formamide mono­solvate

The asymmetric unit of the title compound comprises two mol­ecules of 5-bromo­salicylic acid and two mol­ecules of N,N-di­methyl­formamide (DMF). The crystal structure is dominated by strong O—H⋯O hydrogen bonds between the carb­oxy­lic acid groups of the 5-bromo­salicylic acid molecules and the carbonyl oxygen atoms of the DMF mol­ecules, with the solvent acting as a hydrogen-bond acceptor. This inter­action prevents the formation of the common carb­oxy­lic acid dimer observed in many benzoic acid derivatives.

Synthesis, crystal structure and Hirshfeld surface analysis of 3-[5-(4-chloro­phen­yl)-2-sulfanyl­idene-1,3,4-oxa­diazol-3-yl]-3-(4-methyl­phen­yl)-1-(thio­phen-2-yl)propan-1-one

The asymmetric unit of the title mol­ecule contains a planar oxa­diazole, a thio­phene and two phenyl rings. In the crystal, π–π stacking inter­actions and C—H⋯π(ring) inter­actions help to consolidate the packing.

Synthesis, crystal structure determination, Hirshfeld surface and crystal void analyses, inter­action energy calculations and energy frameworks of N-(2-methyl­phen­yl)-N′-pivaloyl­thio­urea

The asymmetric unit of the title compound comprises an ordered mol­ecule, consisting of methyl­phenyl and pivaloyl moieties attached to the N atoms of the central thio­urea entity.

Synthesis, crystal structure and Hirshfeld surface analysis of 2-(ethyl­sulfan­yl)-3-(2-methyl­prop­yl)-5,5-di­phenyl-4,5-di­hydro-3H-imidazol-4-one

In the title mol­ecule, the imidazolone ring is essentially planar and the inclinations of the planes of the two attached phenyl groups to its plane are distinctly different. There is a degree of π-delocalization in the ring about the tertiary nitro­gen which involves its lone pair. Directed inter­molecular inter­actions comprise C—H⋯O hydrogen bonds and two sets of C—H⋯π(ring) inter­actions. A Hirshfeld surface analysis was performed.

Synthesis and structure of ethyl 2,2-di­methyl-3-(naphthalen-1-yl)-1,2-di­hydro­benzo[c]siline-4-carboxyl­ate

In the title compound, C₂₄H₂₄O₂Si, the ethyl ester substituent shows two-site disorder and C—H⋯O contacts generate zigzag ribbons extending along [010].

Synthesis, structure and computational study of di­acetato­bis­(2-amino-6-fluoro-1,3-benzo­thia­zole-κN³)zinc(II)

The title tetra­hedral Zn^II complex with 2-amino-6-fluoro-1,3-benzo­thia­zole has been structurally characterized. The crystal packing is consolidated by N—H⋯O, bifurcated N—H⋯(O,F), C—H⋯π, O⋯π and offset π–π inter­actions.