A co-crystal of 2-methyl­benz­imidazole and ammonium octamolybdate

In the title compound, tetra­ammonium octamolybdate bis(2-methyl­benz­imidazole), (NH₄)₄[Mo₈O₂₆]·2C₈H₈N₂, the crystal packing is stabilized by N—H...O, N—H...N and C—H...O intra- and intermolecular hydrogen bonds, as well as π–π stacking. The anion lies on an inversion center.

2,4,6-Tri­amino-1,3,5-triazin-1-ium 4-methyl­benzene­sulfonate monohydrate

The asymmetric unit of the new title melaminium salt, C₃H₇N₆⁺·C₇H₇O₃S^-·H₂O, comprises a melaminium cation, a 4-methyl­benzene­sulfonate anion and a water mol­ecule. Extensive intermolecular interactions, including hydrogen bonding, feature in the crystal structure.

Di-μ-hydroxo-bis­[aqua­(1,10-phenanthroline-κ²N,N′)copper(II)] terephthalate octa­hydrate

The title compound, [Cu₂(OH)₂(C₁₂H₈N₂)₂(H₂O)₂](C₈H₄O₄)·8H₂O, was prepared by the hydro­thermal reaction of CuCl₂, 1,10-phenanthroline, terephthalic acid and water at 443 K. It consists of a double-hydroxo-bridged dinuclear complex cation [Cu...Cu = 2.911 (3) Å], a terephthalate anion and eight water mol­ecules. Both cation and anion possess inversion symmetry. A network of O—H...O hydrogen bonds stabilizes the structure.

Bis{[tris­(1H-benzimidazol-2-ylmeth­yl)­amine]­chloro­cobalt(II)} tetra­chloro­cobaltate(II) methanol tetra­solvate

In the title compound, [CoCl(C₂₄H₂₁N₇)]₂[CoCl₄]·4CH₃OH, the crystal packing is stabilized by O—H...Cl, N—H...Cl and N—H...O hydrogen bonds, weak C—H...Cl inter­actions, and π–π stacking. The anion lies on a twofold rotation axis.

2,2′-{2,11-Bis­[(3H-1,3-benzimidazol-1-ium-2-yl)­methyl]-5,8-dioxa-2,11-di­aza­do­decane-1,12-diyl}bis(3H-1,3-benzimidazol-1-ium) dichloride diperchlorate methanol disolvate

The title compound, C₃₈H₄₄N₁₀O₂⁴⁺·2ClO₄⁻·2Cl⁻·2CH₃OH, crystallizes with the main mol­ecule situated on a center of inversion. The ions are connected by intermolecular O—H...O, N—H...O and N—H...Cl hydrogen bonds.