Figure 4
Conformational differences between the molecules in the different structures estimated by superposition of the six-membered heterocyclic ring atoms plus atoms O1 and S1; (a) the average r.m.s. value is 0.07 Å between (I) (black) and (IIa) (grey); (b) the average r.m.s. is 0.07 Å between (I) (black) and (IIIa) (grey). |