Supramolecular structures of five 5-(arylmethylene)-1,3-dimethylpyrimidine-2,4,6(1<i>H</i>,3<i>H</i>,5<i>H</i>)-triones: isolated molecules, hydrogen-bonded chains and chains of fused hydrogen-bonded rings
Acta crystallographica. Section C, Crystal structure communications/Acta crystallographica. Section C, Crystal structure communications.