Synthesis and structural characterization of cadmiumand mercury dithiophosphonate complexes

ABSTRACT In this thesis, the previously synthesized five dithiophosphonic acids [(p-MeO-C6H4)PS(SH)(OR), HLn, (n= 1-5); R= 3-pentyl-, HL1; R= 1-phenyl-1-propyl-, HL2; R= 4-tert-butyl benzyl-, HL3; R= diphenylmethyl-, HL4; R= 4-tert-butylcyclohexyl-, HL5] were prepared by the reaction of Lawesson reagent [LR, 2,4-Bis(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane 2,4-disulfide] with the 5 different type alcohols (3 of the aromatic and the others aliphatic, 3-pentanol, 1-phenyl-1-propanol, 4-tert-butylbenzyl alcohols, diphenylmethanol, 4-tert-butylcyclohexanol). As the crude acids were viscous liquids and difficult to purify they were converted to their ammonium salts ([NH4Ln]) for purification through crystallization. 10 new cadmium and mercury dithiophosphonic acid complexes which is four coordinated (Cd(II)-DTPOA and Hg(II)-DTPOA) were synthesized from the alcohol reactions of the cadmium and mercury salts of these salts. Structures of the compounds were elucidated with the help of elemental analysis, mass spectroscopy, FTIR, Raman, NMR (1H, 13C, 31P), spectroscopy. Key Words : Dithiophosphonic Acid, Dithiophosphonate Complexes, Lawesson's Reagent. This thesis is supported by the Project Coordination Application and Research Center of Bozok University [BAP 6602b-FEN/18-221].