Acta Cryst. (2002). E58, o940-o941  [ doi:10.1107/S1600536802013211 ]

Disappearance of inter- and intramolecular stacking due to one-atom addition in `propylene-linker' in a pyrazolo[3,4-d]pyrimidine-based flexible molecule

K. Avasthi, S. M. Farooq, A. Sharon and P. R. Maulik

Abstract: In the crystal structure of 1,1'-(butane-1,4-diyl)bis(5-methyl-6-methylthio-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-4-one),C₁₈H₂₂N₈O₂S₂, (6), the pyrazolo[3,4-d]pyrimidine rings do not show any inter- or intramolecular stacking due to aromatic - interactions. There is a crystallographic inversion centre at the midpoint of the central C-C bond of the chain linking the two ring systems.

Online 31 July 2002

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