A π-stacked chain of hydrogen-bonded dimers in 3-tert-butyl-1-(4-chloro- phen-yl)-4-phenyl-indeno-[1,2-b]pyrazolo-[4,3-e]pyridin-5(1H)-one and a π-stacked sheet of hydrogen-bonded chains in 3-tert-butyl-1-(4-chloro-phen- yl)-4-(4-meth-oxy-phen-yl)indeno-[1,2-b]pyrazolo-[4,3-e]pyridin-5(1H)-one

1. Portilla, J.
2. Lizarazo, C.
3. Cobo, J.
4. Glidewell, C.