Synthesis and structure of 2-amino-1-methylbenzimid-azolium tetra-kis-[4,4,4-tri-fluoro-1-(1,3-thia-zol-2-yl)butane-1,3-dionato-κ2 O,O']cerium(III).

The title compound, (C8H10N3)[Ce(C7H3F3NO2S)4], crystallizes with two cations and two anions in the asymmetric unit, with ion pairs linked by N-H⋯O hydrogen bonds. The Ce3+ cations adopt near regular square-anti-prismatic coordination geometries, arising from four O,O-bidentate ligands. Numerous N-H⋯F hydrogen bonds, as well as weak contacts such as C-H⋯F and C-H⋯N inter-actions occur in the extended structure. Hirshfeld surface analysis indicates that 34.8% of inter-molecular inter-actions are attributed to F⋯H/H⋯F, 13.2% to H⋯C/C⋯H, 11.1% to H⋯H, 6.6% to H⋯S/S⋯H and 5.5% to H⋯O/O⋯H contacts.