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Figure 2
The hydrogen-bond pattern (dashed lines) in the structure of (I)[link], showing the directed four-membered co-operative hydrogen bonds. H atoms not involved in the hydrogen-bonding pattern have been omitted for clarity. [Symmetry codes: (ii) −x + [{1\over 2}], −y + [{1\over 2}], z + [{1\over 2}]; (iv) 1 − x, −y, 1 − z; (v) x + [{1\over 2}], y − [{1\over 2}], −z + [{1\over 2}].]

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
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