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Figure 2 Part of the crystal structure of (2) showing the chain formed by molecules linked by R22(10) and R22(18) rings which runs parallel to the the {20]. Atoms labelled with an asterisk (*), hash (#) or dollar ($), are at(-x+1,-y,-z), (-x-1,-y+1,-z) and x+2,y-1,z respectively. Hydrogen atoms not involved in the hydrogen bonding have been omitted. |