2,4-Bis[(3-allyl­imidazolium-1-yl)meth­yl]mesitylene bis­(hexa­fluoridophosphate)

In the title mol­ecular salt, C23H30N4 2+·2PF6 −, the central benzene ring of the cation makes dihedral angles of 89.80 (8) and 85.23 (7)° with the pendant imidazole rings. In the crystal, the cations and anions are linked by numerous C—H⋯F hydrogen bonds, thereby forming a three-dimensional network

3,3′-Diallyl-1,1′-[o-phenyl­enebis(methyl­ene)]diimidazol-3-ium bis­(hexa­fluoro­phosphate)

In the cation of the title mol­ecular salt, C20H24N4 2+·2PF6 −, the central benzene ring makes dihedral angles of 84.19 (7) and 79.10 (7)° with the pendant imidazole rings. In one of the hexa­fluoro­phosphate anions, the six F atoms are disordered over two sets of sites, with an occupancy ratio of 0.842 (3):0.158 (3). In the crystal, the cations and anions are linked by numerous C—H⋯F hydrogen bonds, thereby forming a three-dimensional network

1,3-Bis[(3-allyl­imidazol-3-ium-1-yl)meth­yl]benzene bis­(hexa­fluoridophosphate)

In the title compound, C20H24N4 2+·2PF6 −, the ethene and 3-allyl­imidazolium moieties of the cation are disordered over two positions with refined site occupancies of 0.664 (19):0.336 (19) and 0.784 (7):0.216 (7), respectively, whereas four F atoms of one hexa­fluoridophosphate anion and all atoms in the other hexa­fluoridophosphate anion are disordered over two positions with refined site occupancies of 0.764 (5):0.2365) and 0.847 (9):0.153 (9), respectively. The benzene ring is inclined at angles of 78.2 (3), 81.3 (4) and 73.9 (12)° with the 1H-imidazol-3-ium ring and the major and minor components of the disordered 1H-imidazol-3-ium ring, respectively. In the crystal, the hexa­fluoridophosphate anions link the cations into two-dimensional networks parallel to (001) via inter­molecular C—H⋯F hydrogen bonds. The crystal structure is further consolidated by π–π [centroid–centroid distance = 3.672 (3) Å] and C—H⋯π inter­actions