10-Ethyl-4-oxo-2,3,4,10-tetrahydropyrimido[4,5-b]quinolin-2-iminium 4-toluenesulfonate: A polarized electronic structure in the cation and a hydrogen-bonded sheet structure

1. Trilleras, J.
2. Quiroga, J.
3. Low, J.N.
4. Cobo, J.
5. Glidewell, C.