Abstract N-(o-Methoxybenzamido) thioureas (2 X/2 Y) are found to show an enhanced anion binding affinity with binding constants over 10 7 mol− 1 L orders of magnitude for AcO− and a redshifted absorption of the anion binding complexes in acetonitrile (MeCN) relative to those of N-benzamidothioureas (1) that bear no o-OMe in the N-benzamide moiety, despite the electron-donating character of o-OMe. Absorption of the anion–2 X/2 Y complex was ...
