Figure 1
Atom-labeling scheme in a molecule of the title compound. Structure solution involved variation of the following torsional angles: τ1 = C11—C10—N1—C9 and τ2 = C10—N1—C9—C5. The numbers above the bonds are Wiberg bond orders calculated for the isolated molecule using the NBO formalism. Arrows indicate the predicted electron-density transfer. |