Two isomeric 10-methyl-8-phenyl-11-pyridyl-6-8-dihydro-5H-benzo[f]-pyrazolo[3,4-b]quinolines: cyclic hydrogen-bonded tetramers versus isolated molecules

J Portilla, H Serrano, J Cobo, J N Low, C Glidewell

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The molecules of 10-methyl-8-phenyl-11-(3-pyridyl)-6,8-dihydro-5H-benzo[f]pyrazolo[3,4-b] quinoline, C26H20N4, (I), are linked by a single C-H center dot center dot center dot N hydrogen bond into cyclic R-4(4)(12) tetramers generated by a (4) over bar axis. In isomeric 10-methyl-8-phenyl-11-(4-pyridyl)-6,8-dihydro-5H-benzo[f] pyrazolo[3,4-b]quinoline, (II), which crystallizes with Z'=2 in space group P2(1)2(1)2, the two independent molecules are nearly enantiomeric but there are no direction-specific interactions between them.

Original languageEnglish
Number of pages3
JournalActa Crystallographica Section C-Crystal Structure Communications
Volume61
DOIs
Publication statusPublished - Aug 2005

Keywords

  • ABSOLUTE-STRUCTURE

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