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Figure 4
Static deformation density (a)–(c) and residual density (d)–(f) for models for urea based on extracted powder structure-factor lists compared with single crystal (Birkedal et al., 2004BB3). The OHGI structure-factor list is extracted using the aspherical atomic density (MM), which gave better results than the IAM extraction. The AVID plots are based on IAM-extracted structure factors. Contour levels are 0.2 and 0.05 e Å−3 for the deformation and residual density, respectively.

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ISSN: 2053-2733
Volume 77| Part 2| March 2021| Pages 85-95
https://doi.org/10.1107/S2053273320016605
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