SOME SCHIFF-BASE COMPLEXES OF LEAD(II)

The interaction of lead(II) salts with the Schiff bases N,N'-bis(salic ylidene)ethane-1,2-diamine (H(2)salen) and tris[2-(N-salicylideneamino )ethyl]amine (H(3)saltren) resulted in formation of the new complexes [(Pb-3(salen)(2)][ClO4](2) 1 and [Pb(saltren)] 2. The crystal structur es of both complexes have been determined: 1 is a hitherto unreported trimetallic lead species in which the ligand bonds to lead in two diff erent modes; in 2 some sites on the ligand are not involved in bonding to the metal.