A stacked pyrazolo[3,4-d]pyrimidine-based flexible molecule: the effect onstacking of an ethyl group in comparison with a methyl group

Authors
Avasthi, K Aswal, S Maulik, PR
Citation
K. Avasthi et al., A stacked pyrazolo[3,4-d]pyrimidine-based flexible molecule: the effect onstacking of an ethyl group in comparison with a methyl group, ACT CRYST C, 57, 2001, pp. 1324-1325
Citations number
16
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
ISSN journal
01082701 → ACNP
Volume
57
Year of publication
2001
Part
11
Pages
1324 - 1325
Database
ISI
SICI code
0108-2701(200111)57:<1324:ASPFMT>2.0.ZU;2-Z
Abstract
In the crystal structure of 1,1'-(1,3-propanediyl)bis(5-ethyl-6-methylthio- 4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-4-one), C19H24N8O2S2, the pairs of pyrazolo[3,4-d]pyrimidine rings of the molecule stack between the heterocyc lic rings, due to intramolecular pi-pi interactions. The substituted ethyl and methyl groups are comparable as far as intramolecular stacking is conce rned.