Synthesis and Characterization of 2-Mercapto-2-Thiono-1,3,2-Dioxaphospholanes and Dioxaphosphorinanes

Synthesis, spectroscopic, and structural studies of dimethyltellurium(IV) alkylene and diphenyl dithiophosphates. Crystal structures of and

“…Me,TeCI2 was prepared by the reaction of TeCI, and Me4Sn in toluene at 60°C under reflux for 4 h based on a procedure previously reported for the preparation of Ph2TeC12 (24). Sodium/ammonium salts of alkylene (25) and diphenyl (26) The ammonium salt of diphenyl dithiophosphate (0.348 g, 1.16 mmol) was added to a solution of dimethyltellurium dichloride (0.133 g, 0.58 mmol) in toluene (15 mL). The reaction solution was refluxed at 30°C with stining for 2 h. The product solution was filtered to remove NH4C1 and any unreacted materials and the solvent removed under reduced pressure.…”

A study of a variety of O,O-alkylene dithiophosphate derivatives of triphenyl-and diphenylgermane. Crystal structures of and

“…Sodium and ammonium I I salts of 0,O-alkylene dithiophosphates were prepared in the 1 manner described in the literature and their purity was checked by 'H, I3c, and 3 '~ NMR spectroscopy (19). Benzene, toluene, carbon disulfide, and n-hexane were dried and distilled prior to use.…”

Structure of bis(4,4,5,5-tetramethyl-2-thioxo-1,3,2λ5-dioxaphospholan-2-yl) disulfide, [OC(Me)2C(Me)2OP(S)S]2

“…Structural studies by X-ray diffraction of a large number of main-group as well as transition-metal complexes of O,O-dialkyl phosphorodithioate ligands (Wasson, Woltermann & Stoklosa, 1973;Almasi, 1982;Haiduc, 1983;Mehrotra, Srivastava & Chauhan, 1984), carried out during the last two decades, have demonstrated wide variations in the metal-ligand bonding patterns which appear to depend not only on the coordination characteristics of the metal but also on the nature of the alkyl groups in the phosphorodithioate moiety. O,O-Alkylene phosphorodithioate ligands (Chauhan, Bhasin, Srivastava & Mehrotra, 1983), which are the cyclic analogues of the above, offer more interesting possibilities due to the variations in the ring size and the shape (Khaskin, 1984).…”