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Figure 3 View along the c axis as (a) ball and stick and (b) polyhedral representation showing the elliptical channels bounded by eight membered rings. The shortest cross channel distances are 4.092 (2) and 4.360 (1) Å for O2⋯O2xi and O2⋯O6ix respectively. These channels intersect with the main channels shown in Fig.2 to form a 3-D pore network. [Symmetry codes: (ix) −x + , y + , z; (xi) −x, 1 − y, z]. |