TY - JOUR
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
U2 - 10.1107/S0108270105021876
DO - 10.1107/S0108270105021876
M3 - Article
SN - 1600-5759
VL - 61
JO - Acta Crystallographica Section C-Crystal Structure Communications
JF - Acta Crystallographica Section C-Crystal Structure Communications
ER -