Fig. 5

Topology of triamterene showing a the AB chain looking down [010], b the AB chain viewed down [100] and c the full topology of the sheet down (01−1) showing the [100] chain in the same orientation as (b) above
Topology of triamterene showing a the AB chain looking down [010], b the AB chain viewed down [100] and c the full topology of the sheet down (01−1) showing the [100] chain in the same orientation as (b) above