Figure 4
Superposition of compounds (I) and (II), both shown in a ball-and-stick model and with C atoms coloured cyan for (I) and green for (II). The O, N and P atoms are coloured red, blue and orange, respectively. The distance between the two phenyl rings from the seven-membered ring of (I) is marked. The conformational change of phenyl ring 1 of (II) in comparison with a similar ring in (I) is shown with a green arrow. |