The synthesis and characterization of complexes of Zn(II), Pd(II), Cd(II), Hg(II), bb(II), Cu(I), Ag(I), and T1(I) with 4-amino-5-mercapto-3-(o- tolyloxymethyl)-1,2,4-triazole are described. Based on analytical results, electronic and infrared spectral data and magnetic susceptibility measurements suitable structures have been proposed.