A hydrogen-bonded dimer in 6-(4-bromo-phen-yl)-3-methyl-1-phenyl-4,5- dihydro-1H-pyrazolo[3,4-b]pyridine and a chain of rings built from N - H⋯N and C - H⋯π(pyridine) hydrogen bonds in 3-(4-nitro-phen-yl)-4-phenyl-1H-pyrazolo[3,4-b]pyridine

1. Quiroga, J.
2. Trilleras, J.
3. Hursthouse, M.B.
4. Cobo, J.
5. Glidewell, C.