%0 Journal Article %T Dimers linked by type-I C-F···F-C contacts in (Z)-3-methyl-4-[2-(4-methylphenyl)hydrazinylidene]-1-(pentafluorophenyl)-1H-pyrazol-5(4H)-one. %A Alvarez-Thon L %A Bustos C %A Espinoza-Santibañez K %A Garland MT %A Baggio R %J Acta Crystallogr C %V 69 %N 0 %D Oct 2013 %M 24096516 暂无%R 10.1107/S0108270113024943 %X The title compound, C17H11F5N4O, is described and compared with two closely related analogues in the literature. There are two independent molecules in the asymmetric unit, linked by N-H···O hydrogen bonds and π-π interactions into dimeric entities, presenting a noticeable noncrystallographic C2 symmetry. These dimers are in turn linked by a medium-strength type-I C-F···F-C interaction into elongated tetramers. Much weaker C-H···F contacts link the tetramers into broad two-dimensional substructures parallel to (101).