2-Bromo-3-phenyl-1-(3-phenyl-sydnon-4-yl)prop-2-en-1-one

A new nanocrystalline inorganic–organic hybrid exhibiting semiconducting properties and applications

A new nanocrystalline inorganic–organic hybrid semiconductor [(BV)₂(Ag₅Br₉)]_n (1) with an intriguing windmill-like 1-D [Ag₅Br₉]_nⁿ⁻ polymeric chain was assembled. Great efforts were devoted to investigate its semiconducting properties and applications.

3-(p-Anis-yl)sydnone

In the title sydnone compound [systematic name: 3-(4-meth­oxy­phen­yl)-1,2,3-oxadiazol-3-ium-5-olate], C₉H₈N₂O₃, the essentially planar oxadiazole ring [maximum deviation = 0.005 (1) Å] is inclined at a dihedral angle of 30.32 (8)° with respect to the benzene ring. In the crystal, adjacent mol­ecules are inter­connected by inter­molecular C—H⋯O hydrogen bonds into sheets lying parallel to (100). Weak inter­molecular π–π inter­actions [centroid–centroid distance = 3.5812 (8) Å] further stabilize the crystal packing.

3-Phenyl-4-{3-[(p-tol-yloxy)meth-yl]-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazin-6-yl}sydnone

In the title compound (systematic name: 3-phenyl-4-{3-[(p-tol­yloxy)meth­yl]-7H-1,2,4-triazolo[3,4-b][1,3,4]thia­diazin-6-yl}-1,2,3-oxadiazol-3-ium-5-olate), C₂₀H₁₆N₆O₃S, an intra­molecular C—H⋯O hydrogen bond generates an S(6) ring motif. The 3,6-dihydro-1,3,4-thia­diazine ring adopts a twist-boat conformation. The 1,2,3-oxadiazole and 1,2,4-triazole rings are inclined to each other at an inter­planar angle of 44.13 (13)°. The phenyl ring makes an inter­planar angle of 67.40 (13)° with the attached 1,2,3-oxadiazole ring. In the crystal structure, adjacent mol­ecules are inter­connected into two-mol­ecule-thick arrays parallel to (100) via C—H⋯O and C—H⋯N hydrogen bonds. A short S⋯O contact [2.9512 (18) Å] is observed.

3-(2,3-Dimethyl-5-oxo-1-phenyl-2,5-dihydro-1H-pyrazol-4-yl)sydnone

In the title sydnone compound [systematic name: 3-(2,3-dimethyl-5-oxo-1-phenyl-2,5-dihydro-1H-pyrazol-4-yl)-1,2,3-oxadiazol-3-ium-5-olate], C₁₃H₁₂N₄O₃, the oxadiazole and pyrazole rings are essentially planar [maximum deviations = 0.006 (1) and 0.019 (1) Å, respectively] and are inclined at inter­planar angles of 37.84 (4) and 46.60 (4)°, respectively, with respect to the benzene ring. In the crystal, adjacent mol­ecules are inter­connected into a three-dimensional supra­molecular network via inter­molecular C—H⋯O hydrogen bonds. Weak inter­molecular π–π aromatic stacking inter­actions [centroid–centroid distance = 3.5251 (5) Å] further stabilize the crystal packing.

4-[3-(1-Naphthyl-oxymeth-yl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thia-diazin-6-yl]-3-p-tolyl-sydnone

In the title sydnone compound, C₂₄H₁₈N₆O₃S {systematic name: 4-[3-(1-naphthyl­oxymeth­yl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thia­diazin-6-yl]-3-p-tolyl-4,5-dihydro-1,2,3-oxadiazol-3-ium-5-olate} an intra­molecular C—H⋯O hydrogen bond generates an S(6) ring motif. The 3,6-dihydro-1,3,4-thia­diazine ring adopts a twist-boat conformation. The essentially planar 1,2,3-oxadiazole and 1,2,4-triazole rings [maximum deviations of 0.006 (1) and 0.008 (1) Å, respectively] are inclined to one another at inter­planar angle of 44.11 (4)°. The naphthalene unit forms an inter­planar angle of 66.40 (4)° with the 1,2,4-triazole ring. In the crystal packing, pairs of inter­molecular C—H⋯O hydrogen bonds link adjacent mol­ecules into dimers incorporating R₂²(12) ring motifs. Further stabilization is provided by weak C—H⋯π inter­actions.