Potentiometric and AM1d studies of silicon podands-silver(I) complexes

Formation of complexes of various silicon podands and silver(I) cations in propylene carbonate has been studied by the potentiometric and AM1d semiempirical methods. Silicon podands form stable complexes with Ag+ cations. The stability constants of various complexes are determined. It has been shown that the number of Ag+ cations complexed by the Si-podands depends strongly on the number of oxygen atoms in the oxaalkyl chains. The PhSi15.3 podand can complex as many as 6 silver(I) cations. The structures of these complexes are visualised by the AM1d semiempirical method.