3,3′-(p-Phenyl­enedimethyl­ene)bis(1-methyl­imidazolium)–tetrachloro­argentate(I) (3/2)

The title compound, (C₁₆H₂₀N₄)₃[AgCl₄]₂, exists as discrete 3,3′-(1,4-phenyl­dimethyl­ene)bis(1-methyl­imidazol­ium) cations and tetrachloroargentate(I) anions, which are linked by C—H...Cl hydrogen bonds [C...Cl = 3.453 (5)–3.711 (7) Å] and π–π interactions. The asymmetric unit contains one anion, one cation in a general position, and half of a cation which lies on an inversion centre.

{1,8-Bis[2-(1-benz­yl-1H-imidazol-3-ylmeth­yl-κC²)phen­oxy]-3,6-dioxaocta­ne-κ²O³,O⁶}mercury(II) bis­(hexa­flourophosphate) nitro­methane solvate

In the title compound, [Hg(C₄₀H₄₂N₄O₄)](PF₆)₂·CH₃NO₂, the geometry of the Hg coordination is distorted tetra­hedral, formed by two C atoms [Hg—C = 2.076 (7) and 2.068 (7) Å] and two O atoms [Hg—O = 2.703 (5) and 2.934 (5) Å]. The crystal packing is stabilized by weak C—H...F and C—H...O inter­actions.

[(Triglycol di­tolyl­ene)­imidazolium]-2,6-di­methyl­pyridine bis(hexafluorophosphate)

In the title compound, 6,16,38-triaza-3,13-diazonia-22,25,28,31-tetraoxaoctacyclo[30.2.2.2^18,21.1^3,6.1^8,12.1^13,16]hentetracon­ta-1(34),3,8,10,12(38),13,18,20,32,35,40-undecaene bis­(hexa­fluorophosphate), C₃₃H₃₇N₅O₄²⁺·2PF₆⁻, the two imid­azol­ium rings adopt a cis configuration with respect to the 2,6-dimethylpyridine group. The crystal packing is stabilized by C—H...F hydrogen bonds.

2,4-Dichloro­benzohydro­xamic acid

The title compound, C₇H₅Cl₂NO₂, was prepared by reaction of meth­yl 2,4-dichloro­benzoate with excess NH₂OH in basic solution. In the crystal structure, the mol­ecules are linked into a three-dimensional extended network by O—H...O, N—H...O and C—H...O hydrogen-bond inter­actions.

Trichloro[1,3-bis(2-pyridylmethyl)imidazolium]zinc(II)

In the title compound, [Zn(C₁₅H₁₅N₄)Cl₃], the Zn^II atom is in a distorted tetra­hedral environment, coordinated by three Cl atoms and a pyridine N atom. In the crystal packing, the mol­ecules are linked by C—H...Cl hydrogen bonds into a sheet-like structure parallel to the ac plane.

3,4-Difluoro­benzohydro­xamic acid

The title compound, C₇H₅F₂NO₂, was prepared by the reaction of meth­yl 3,4-difluoro­benzoate with excess NH₂OH in basic solution. In the crystal structure, the mol­ecules are linked into a three-dimensional extended network by N—H...O, O—H...O, C—H...O and C—H...F hydrogen-bond inter­actions.

9,10-Bis[3-(2-pyridylmeth­yl)imidazolium-1-ylmeth­yl]anthracene bis­(hexa­fluoro­phosphate)

In the title centrosymmetric compound, C₃₄H₃₀N₆²⁺·2PF₆⁻, the planes through the pyridine and anthracene ring systems form dihedral angles of 78.8 (1) and 73.5 (1)°, respectively, with the imidazole ring. The crystal packing is stabilized by π–π stacking inter­actions between the anthracene ring system and pyridine rings of adjacent mol­ecules, and also by C—H...N hydrogen bonds.

2,6-Bis(1H-imidazol-1-ylmeth­yl)pyridine sesquihydrate

The title compound, C₁₃H₁₃N₅·1.5H₂O, was synthesized by the reaction of 2,6-bis­(bromo­meth­yl)pyridine with imidazole. The asymmetric unit contains two crystallographically independent 2,6-bis­(1H-imidazol-1-ylmeth­yl)pyridine mol­ecules and three water mol­ecules. The crystal packing is stabilized by O—H...O and O—H...N hydrogen-bond inter­actions.