Lead(II) and cadmium(II) compounds with 2,4-dichlorophenoxyacetic acid (2,4D) and 2-(2,4-dichlorophenoxy)-propionic acid (2,4DP) - Synthesis and properties

The paper presents the conditions under which compounds of the commercial herbicides, 2,4-dichlorophenoxyacetic acid (2,4D; C8H6O3Cl2) and 2-(2,4-dichlorophenoxy)-propionic acid(2,4DP; C(9)H(8)O(3)C(l)2), with lead(II) and cadmium(II) are formed and the results of the examination of their properties. On the basis of the elemental analysis and Pb and Cd determination, the following molecular formulae for the obtained compounds were proposed: Pb(C(8)H(5)O(3)C(l)2)(2).H2O, Cd(C8H5O3Cl2)(2).2H(2)O, Pb(C(9)H(7)O(3)C(l)2)(2).H2O and Cd(C(9)H(7)O(3)C(l)2)(2).H2O. Water solubility of the synthesized complexes at room temperature was examined. X-ray powder analysis was carried out. The discussion of IR spectra and conductivity data is presented. Thermal decomposition of these compounds in air was studied by TG/MS methods.