Jerry P. Jasinski, Ray J. Butcher, Q. N. M. Hakim Al-Arique, H. S. Yathirajan and B. Narayana .
Imatinibium dipicrate , Acta Cryst (2010). E66, o411-o412 Â Â In the crystal structure of imatinibium dipicrate [systematic name: 1-methyl-4-(4-{4-methyl-3-[4-(3-pyridyl)pyrimidin-2-ylamino]anilinocarbonyl}benzyl)piperazine-1,4-diium dipicrate], C29H33N7O2+·2C6H2N3O7-, the imatinibium cation is protonated at both of the pyrimidine N atoms. Each of the two picrate anions interacts with the diprotonated cation through bifurcated N-H...O hydrogen bonds forming R12(6) ring motifs. Also, an R22(24) graph set is formed between the benzamidium -NH- group and the 4-pyridyl N atom interacting through N-H...N hydrogen-bond interactions. Additional weak C-H...Cg [pi]-ring and [pi]-[pi] intermolecular interactions are observed which also influence crystal packing.