Dithiophosphinic acid esters

Thiophosphorus compounds P PS s. 12, 641 dithiophosphinic acid esters from alkylthiophosphines s. V. D. Akamsin and N. I. Rizpolozhenskii, Dokl. Akad. Nauk SSSR 168, 807 (1966) C. A. 65, 8953f ... 

Thiophosphinic acids and mercaptans from dithiophosphinic acid esters... 

Dithiophosphinic acid esters from dithiophosphinic acids s. 12, 661 Thiazolidines... 

Numerous preparative methods have been reported for these acids and their salts and ester derivatives.1 4 Dithiophosphoric acids are accessible from the reaction of phosphorus pentasulfide with alcohols or phenols (Equation 18). Dithiophosphinic acids can be prepared from thiophosphinic chlorides and sodium hydrosulfide (Equation 19), although the phenyl derivative is better prepared using a modified Friedel-Crafts reaction in which phosphorus pentasulfide is reacted with benzene in the presence of anhydrous aluminium trichloride (Equation 20). 

Using a typical poly (vinyl chloride) (PVC)-based membrane with different ionophores - Zn-bis(2,4,4-trimethylpen-tyl) dithiophosphinic acid complex [450], protoporphyrin IX dimethyl ester [451], porphyrin derivative [452] and hemato-porphyrin IX [453], tetra(2-aminophenyl) porphyrin [454], cryptands [455, 456], 12-crown-4 [457], benzo-substituted macro-cyclic diamide [458], 5,6,14,15-dibenzo-l, 4-dioxa-8,l 2, diazacyclopentadecane-5,14-diene [459], and (A-[(ethyl-l-pyrrolidinyl-2 -methyl) ] methoxy-2-sulfamoyl-5 -benza-mide [460] - the sensors for zinc ions were prepared and investigated. The armed macrocycle, 5,7,7,12,14,14-hexamethyl-1,4,8,11 -tetraazacyclo tetradeca-4,11 -diene dihydrogen perchlorate was used for the preparation of polystyrene-based Zn(II)-sensitive electrode [461]. 

Dithiophosphinic acids Dithiophosphoric acid 0,0-diesters Dithiophosphonic acid O-esters... 

There are sulfur analogues to some of the types of oxo-acids and esters, many of which have been extensively studied,46 and some of which have important industrial uses. The most important of these are the dithiophosphinates (or phosphinodi-thioates) and the dithiophosphates which are the anions of R2P(S)SH and (RO)2PS(SH), respectively. The dithiophosphates are essential additives to motor oils. They are easily made ... 

Pinkerton and coworkers reported another method for separating the contact shifts and evaluating the hyperfine coupling constant A for P in NMR studies of a series of tetrakis lanthanide complexes derived from dithiophosphinates, [R S2P(CH3)2 4] (Spiliadis and Pinkerton 1982) and esters of dithiophosphoric acid, [R (XO)2PS2 4] ... 

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