Abstract The tetrabutylammonium (TBA+) salts of square-planar monoanionic gold complexes of the unsymmetrically substituted Ar, H-edt 2− 1, 2-dithiolene ligands (Ar, H-edt 2−= arylethylene-1, 2-dithiolato; Ar= phenyl (1−), 2-naphthyl (2−), and 1-pyrenyl (3−)) were synthesized and characterized by spectroscopic and electrochemical methods and the corresponding neutral species (1, 2, and 3, respectively) were obtained in CH 2 Cl 2 ...