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Figure 1
Mol­ecular structures of (a) 1, (b) 2 and (c) 3, showing thermal displacement ellipsoids drawn at the 50% probability level and the atom-labelling scheme. The disorder in 2 (b) is shown in yellow. The carbon atoms in the asymmetric unit of 3 (c) are shown in green. Intra­molecular hydrogen bonds are indicated.

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ISSN: 2056-9890
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