Fig. 7

(a) Molecular structure of ETH optimized in the gas phase from the ωb97xd/6-311 + + g(d, p) method. (b) Overlay of the optimized ETH geometries in different solvents, demonstrating minimal conformational variation (RMSD < 0.03 Å between structures). The colors represent: chloroform (green), methanol (red), water (blue), and vacuum (gray). The plots were generated from Chemcraft software (version 1.8).