New Method for the Preparation of Octathiotetraphosphetanes on the Basis of Elemental Phosphorus and Sulfur: Structure and Properties

Synthesis and Some Properties of Transition Metal Complexes Based on the Octathiophophetane Ammonium Salts

“…As shown before for the original ammonium salts 1 and 2 as well as for the Cu(I) complex 3 with the ligand 1 , IR/Raman spectroscopy can be successfully used for the determining of the structure of product 4 . Because of the high complexity of spectral data, the calculations within the framework of DFT are uniquely useful for spectral interpretation when combined with comprehensive experimental analysis and theoretical models.…”

“…Therefore, ammonium salts of cyclic octathiotetraphosphetanes represent such type of novel heterocyclic ligands. These salts were obtained earlier based on the reaction of white phosphorus (P 4 ) and elemental sulfur with aliphatic mercaptans in the presence of amines .…”

Green Chemistry. Reaction of Elemental Phosphorus (P4) and Elemental Sulfur with Protonodonor Reagents: New Methods for the Synthesis of Ammonium Salts of S,S′‐Dialkyltetrathiophosphoric Acids and Octathiotetraphosphetane

“…In contrast with our previous investigations, the use of aliphatic thiols as proton donors in the same systems led to the synthesis of two phosphorus‐containing products: the ammonium salts of S,S ′‐dialkyltetrathiophosphoric acids ( 4a–c ) ( main product, yield 75–80%) and the four‐membered cyclic phosphorus derivatives that are ammonium salts of octathiotetraphosphetane ( 5a–d ) (minor product, yield 18–20%).…”

“…The second phosphorus‐containing products present light yellow crystal precipitates of ammonium salts of 1,2,3,4‐tetramercapto‐1,2,3,4‐tetrathioxotetraphosphetane ( 5a–d) are formed as the reaction mixture is allowed to sit at room temperature (Fig. ) .…”

“…Then the precipitated crystals of 5a–d were separated from the solution by decantation, washed with acetonitrile (3 × 5 mL) and diethyl ether (2 × 5 mL) and dried. Physical, analytical, and spectral data for 5a–d were given in previous publications .…”