journal menu
organic compounds
In the title compound, 2C14H19N4O3+·C7H3NO42−·5H2O, the asymmetric unit contains two trimethoprim cations (A and B), a dipicolinate anion and five water molecules. One of the picolinate carboxylate groups interacts with cation A via a pair of N—H
O hydrogen bonds, forming a ring motif 
(8). A loop of O—HO hydrogen bonds is formed between four water molecules and the two carboxylate groups to form a supramolecular chain along the a axis. Molecules A and B constitute a base pair via N—HN hydrogen bonds, and these base pairs are cross-linked by N—HO and C—HO hydrogen bonds.
O hydrogen bonds, forming a ring motif 
(8). A loop of O—HO hydrogen bonds is formed between four water molecules and the two carboxylate groups to form a supramolecular chain along the a axis. Molecules A and B constitute a base pair via N—HN hydrogen bonds, and these base pairs are cross-linked by N—HO and C—HO hydrogen bonds.
