Compound 5-methyl-2-phenyl-4-[(Z)-3-tolylamino-phenylmethylene]pyrazol-3(2H)- one (C24H21N3O) crystallizes in the triclinic system, space group P1, with a = 9.267(3), b = 9.904(4), c = 12.035(4) ?, α = 97.896(6), β = 103.865(6), γ = 107.950(6)o, Mr = 367.44, Z = 2, V = 993.2(6) ?3, Dc = 1.229 g/cm3, μ(MoKα) = 0.077 mm-1 and F(000) = 388. The structure was refined to R = 0.0444 and wR = 0.1199 for 2903 observed reflections (I > 2σ(I)). The results of 1H NMR and single-crystal X-ray diffraction studies showed the enamine character of the compound. The strong intramolecular hydrogen bonds in the large conjugate system, together with weak intermolecular C–H…π hydrogen bonding and π…π stacking, lead to the formation of a multi-dimensional supramolecular network.
The title compound N,N?-4-aminomethyl-pyromellitic diimide (4-pmpmd) crys- tallizes in monoclinic, space group P21/c with a = 4.785(1), b = 6.200(1), c = 29.907(2) ?, β = 93.583(11)o, V = 885.5(2) ?3, Dc = 1.494 g/cm3, Z = 2, C22H14N4O4, Mr = 398.37, μ(MoKα) = 0.106 mm–1 and F(000) = 412, and its structure was refined to R = 0.0469 and wR = 0.1017 for 1194 observed reflections (FO > 4σ(FO)). The X-ray diffraction shows the existence of the staggered strong intermolecular C–H???O (DA) hydrogen bonds between adjacent molecules, the intermo- lecular C–H???π hydrogen bonds and the weak π???π stacking interactions, leading to the formation of multi-dimensional supramolecular network based on the Z-mode conformation of the title com- pound.
