Carbamazepine N,N-dimethylformamide solvate

In the title compound, C15H12N2O center dot C3H7NO, carbamazepine molecules form the R-2(2)(8) N-H center dot center dot center dot O hydrogen-bonded dimer arrangement observed in the crystal structures of each of the four known anhydrous polymorphs. The molecules of N,N-dimethylformamide are located between adjacent carbamazepine dimers and form an N-H center dot center dot center dot O hydrogen bond to the anti-oriented NH group of the carboxamide moiety of carbamazepine.