Methylene bis(p-chlorobezodithioate): Synthesis, characterization and its use as analytical reagent for Silver ion

Abstract

The study included the preparation and diagnosis of disulfur ligands (Dithiols) and the preparation of their complex with monovalent (Silver), which included the the following steps: First: preparation of the sulfur compound through the reaction of Grignard reagent (ClPhMgX), with carbon disulfide (CS₂), this step form [ClPhCS₂]^- , an acidic liquid sulfur compound which was converted into a dimer compound by second step :- reacting with (Benzene tetra methyl ammonium hydroxyl) which produce a negatively charged compound [ClPhCS₂]^-, which is a viscous, hydrated compound with a strong sulfur smell. The product [ClPhCS₂]^- react with dichloromethane (DCM) which produce (methylene-bis (p-Chlorodithiobenzoate). Which is characterized with (IR,UV-VIS, ¹H-NMR, ¹³C spectroscopy , mass spectrometry) then followed by Analytical study for the prepared compound were investigated by preparation of their complex with Monovalent (Silver), where the stability constants of the prepared complex were studied, which showed the stability of the complex at room temperature and at pH (PH = 8). The absorbance of the complex for UV-Vis. light was studied and the mole ratio (M: L) was studied. From the study of spectroscopic methods.