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Figure 3 Tetrameric units formed by cooperative hydrogen bonding (indicated by dashed lines), viewed along [0 0 − 1]. Symmetry operators: i x − , −y, −z + ; ii −x + 1, y − , −z + . |
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Figure 3 Tetrameric units formed by cooperative hydrogen bonding (indicated by dashed lines), viewed along [0 0 − 1]. Symmetry operators: i x − , −y, −z + ; ii −x + 1, y − , −z + . |