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Figure 2
The packing structure of (IIb) representative for (IIa) and (IIb), viewed down the c axis, showing the stackings and the C—H⋯F contacts connecting the zigzag chains. Dashed lines indicate C—H⋯F contacts. [Symmetry code: (i) −x + 1, −y + 1, −z + 1.]

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CHEMISTRY
ISSN: 2053-2296
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