Abstract
Organic compounds containing a 1-phosphoryl-2-aza-3-thiocarbonyl group (IIa) or a 1-phosphoryl-3-imino group (IIb-g) were prepared by a two phases reaction between dialkylphosphite and thiourea or the appropriate guanidine. The complexation studies carried out by UV titration method and conductivity measurements showed that these ligands complex metal ions like Cu2+, Co2+, Cd2+, Hg2+, Pb2+, Fe3+, Zn2+, Ni2+ and Al3+ in neutral solution.