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Figure 10
(a) Molecular sketch of tetraphenylbutatriene and (b) its deformation density map with contours at 0.10 e Å−3. Zero and negative contours are represented as broken and dotted lines respectively. (c) Deformation density sections perpendicular to the outer (left) and inner (right) C=C bonds through their centres. The charge in the outer C=C bond is elongated along the normal to the butatriene plane, while that in the inner C=C bond is elongated in the plane. Adapted from Coppens, P. (1977 ![]() |