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. 2009 Feb 11;65(Pt 3):o504–o505. doi: 10.1107/S1600536809003948

Table 2. π–π Stacking interactions (Å, °).

Cgi Cgj CgiCgj α perp
Cg1 Cg2 3.972 (1) 10.9 3.575
Cg1 Cg4 3.646 (1) 8.1 3.578
Cg1 Cg4i 3.785 (1) 8.1 3.535
Cg2 Cg3i 3.792 (1) 9.9 3.599
Cg2 Cg3 3.883 (1) 9.9 3.743
Cg3 Cg4i 3.769 (1) 7.1 3.516

Symmetry code: (i) Inline graphic. Cg1, Cg2, Cg3, and Cg4 are the centroids of the O1A/C2A–C4A/C9A/C10A, O1B/C2B–C4B/C9B/C10B, C5A–C10A and C5B–C10B rings, respectively. α is the dihedral angle between ring planes and perp is the perpendicular distance between ring planes.