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Bis-(fi-mercaptoethylamine)-nickel( 11) [Ni( NHzCHZCHZS)~] has been observed to undergo reaction with aqueous solutions of several different metal salts, resulting in the formation of adducts having the general formula [M'{ Ni-(NHL!HzCH~S)Z)Z]"+, where M' = Cu(I), Cu(II), Pd(II), Pt(II), and Cd(I1). The corresponding complex of palladium(I1) [Pd( NH~CH~CHZS)~] behaves in an analogous manner, combining with nickel(I1) ion to form a derivative of the formula [Ni {Pd( NHzCHZCHZS)Z) z 12+. Magnetic studies, conductivity measurements, and spectrophotometric continuous variations studies all support the assignment of a trinuclear structure in which the neutral complex serves as a chelating ligand to the unique metal atom M'. A novel material containing three different metal ions has been formulated as [Cd( Ni( NHzCHZCHZS)~}~] [HgI.,].

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AÍ, D(C), 10"' cm.1/ Average deviation, g./100 ml. g./100 ml.g./100 ml.sec. sec.slope. This is, at least, in qualitative agreement with the theoretical deduction of Creeth referred to above.

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