TY - JOUR
T1 - Orthorhombic and monoclinic polymorphs of 1,3,5-triphenylperhydro-1,3,5-triazine-2,4,6-trione at 120 K: chains and sheets formed by C-H center dot center dot center dot pi(arene) hydrogen bonds
AU - Mariyatra, M B
AU - Panchanatheswaran, K
AU - Low, J N
AU - Glidewell, C
PY - 2004/9
Y1 - 2004/9
N2 - The title compound, C21H15N3O3, crystallizes in two polymorphic forms. In the orthorhombic polymorph, (I), in space group Fdd2 with Z' = 1, the molecules lie in general positions, while in the monoclinic polymorph, (II), in space group C2/c with Z' = 1 2, the molecules lie across twofold rotation axes. In each polymorph, the molecules are linked by a single C-H...pi(arene) hydrogen bond, forming chains in polymorph (I) and sheets in (II).
AB - The title compound, C21H15N3O3, crystallizes in two polymorphic forms. In the orthorhombic polymorph, (I), in space group Fdd2 with Z' = 1, the molecules lie in general positions, while in the monoclinic polymorph, (II), in space group C2/c with Z' = 1 2, the molecules lie across twofold rotation axes. In each polymorph, the molecules are linked by a single C-H...pi(arene) hydrogen bond, forming chains in polymorph (I) and sheets in (II).
KW - ABSOLUTE-STRUCTURE
KW - CONFIGURATION
U2 - 10.1107/S0108270104017342
DO - 10.1107/S0108270104017342
M3 - Article
SN - 1600-5759
VL - 60
JO - Acta Crystallographica Section C-Crystal Structure Communications
JF - Acta Crystallographica Section C-Crystal Structure Communications
ER -