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Figure 1
The mol­ecular structures of compounds (I)[link], (II)[link] and (III)[link] determined at 93, 290 and 93 K, respectively, with the atom labelling. Displacement ellipsoids are drawn at the 50% probability level. O—H⋯N hydrogen bonds are indicated by dashed lines [symmetry code for (I)[link]: (ii) −x, −y + 2, −z].

ISSN: 2056-9890
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