Figure 3
The relation between the C—Cm—C bond angle around the methylene group in diphenylmethane and the average distance between the methane Cm atom and the aromatic ring planes, as extracted from the CSD. The search fragment is shown at the top, with the C—Cm—C bond angle marked in bold. Closed solid squares represent CSD data with 0.05 < R < 0.10 and open circles are data with R < 0.05. The black diamond represents (I). |