Figure 6.
The calculated geometries of the 5-modifications in (A) N-Me-5-OMe-uracil; (B) N-Me-5-SMe-uracil and (C) N-Me-5-SeMe-uracil.
The calculated geometries of the 5-modifications in (A) N-Me-5-OMe-uracil; (B) N-Me-5-SMe-uracil and (C) N-Me-5-SeMe-uracil.