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

doi:10.1107/S0108270105021876

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

School of Chemistry

Research output: Contribution to journal › Article › peer-review

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 language	English
Number of pages	3
Journal	Acta Crystallographica Section C-Crystal Structure Communications
Volume	61
DOIs	https://doi.org/10.1107/S0108270105021876
Publication status	Published - Aug 2005

Keywords

ABSOLUTE-STRUCTURE

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title = "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",

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.",

keywords = "ABSOLUTE-STRUCTURE",

author = "J Portilla and H Serrano and J Cobo and Low, \{J N\} and C Glidewell",

year = "2005",

month = aug,

doi = "10.1107/S0108270105021876",

language = "English",

volume = "61",

journal = "Acta Crystallographica Section C-Crystal Structure Communications",

issn = "1600-5759",

publisher = "International Union of Crystallography",

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T1 - 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

AU - Portilla, J

AU - Serrano, H

AU - Cobo, J

AU - Low, J N

AU - Glidewell, C

PY - 2005/8

Y1 - 2005/8

N2 - 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.

AB - 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.

KW - ABSOLUTE-STRUCTURE

UR - https://www.scopus.com/pages/publications/30744457097

U2 - 10.1107/S0108270105021876

DO - 10.1107/S0108270105021876

M3 - Article

SN - 1600-5759

SN - 0108-2701

VL - 61

JO - Acta Crystallographica Section C-Crystal Structure Communications

JF - Acta Crystallographica Section C-Crystal Structure Communications

ER -

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

Abstract

Keywords

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