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Figure 18
Molecular geometry in the α phase of P.O.13 (`final' structural models), and in the β phase (single-crystal data). The molecule of the two-layer model is drawn in element colours, of the four-layer model in blue, and of the β phase in red. The values denote the interplanar angles between the phenyl rings, and between the pyrazolone moiety and the terminal phenyl rings.

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CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
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