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Figure 11
Difference Fourier maps of the monoclinic polymorph of p-benzosemiquinone at room temperature. An elongated positive peak (red area) near O1 corresponds to a delocalized H1 atom, suggesting a dynamical model. In the case of static disorder or tautomerism, two separated peaks would be expected. Separation distances are in Å and the colour-coded electron density is in e Å−3.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 62| Part 6| November 2006| Pages 1051-1060
doi:10.1107/S0108768106038870
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