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Figure 8
Representative isosurfaces of the detachment and attachment densities (in orange and blue, respectively) of the urea molecule relative to electronic rearrangements with respect to the reference RHF charge distribution when different correlated wavefunctions are taken into account.

IUCrJ
Volume 4| Part 2| March 2017| Pages 136-146
ISSN: 2052-2525
https://doi.org/10.1107/S2052252516019217