6-Amino-8-(2-bromo­phen­yl)-1,7,8,8a-tetrahydro-3H-isothio­chromene-5,7,7-tricarbonitrile dimethyl­formamide solvate

In the title compound, C(18)H(13)BrN(4)S·C(3)H(7)NO, the thio­pyran ring and the adjacent six-numbered ring adopt distorted boat conformations. The mol­ecules, lying about inversion centers, form hydrogen-bonded dimers involving one of the H atoms on the amino group with the N atom of a cyano group of an adjacent mol­ecule, resulting in a 12-membered ring system [R (2) (2)(12) ring motif]. The other H atom of the amino group forms an inter­molecular hydrogen bond with the O atom of the dimethyl­formamide (DMF) mol­ecule. Another lone pair of electrons on the same carbonyl O atom of DMF mol­ecule forms a non-classical C—H⋯O inter­molecular hydrogen bond, resulting in a chain of mol­ecules.