Diethyl dithiophosphate

Tin, bis(diethyldithiocarbamato)diphenyl-angular parameters, 1,57 Tin, bis(diethyldithiocarbonato)diiodo-angular parameters, 1,57 Tin, bis(diethyl dithiophosphate)diphenyl-stereochemistry, 1,59 Tin, bis(diethyldithiophosphonium)diiodo-angular parameters, 1, 57 Tin, chlorotris(tropolone)-stereochemistry, 1, 82 Tin, cyclopentadienyl-, 3, 218 Tin, dibromobis(ethyldithiocarbonato)-angular parameters, 1, 57 Tin, dichlorobis(ethyldithiocarbonato)-angular parameters, 1, 57 Tin, dimethylbis(acetylacetone)-structure, 1, 58... 

When chlorine reacted with sodium diethyl dithiophosphate in the presence of an organic solvent, the desired compound was obtained in good yield. The reaction of phosphorus pentachloride on the sodium salt resulted in the same product. Thiophos-phoryl chloride is a probable by-product of this reaction. It was later found that diethyl dithiophosphoric acid could be chlorinated in an organic solvent without the intermediate preparation of the sodium salt. 

For the case that the hydrophobic entity is disulphide, the mineral will be depressed when the reaction of the type (2-3) or (2-4) occurs before the reaction (1-3). Thus for the pyrite /diethyl dithiophosphate (DTP) system, pyrite will be depressed if the oxidation reaction... 

In the case of the galena/diethyl/dithiophosphate system, if the reaction Eq. (2-22a) occurs before the following reaction... 

Therefore, the critical pH of hydroxyl depression of pyrite and galena could be calculated using Eqs. (5-4) to (5-8) or Eqs. (5-9) to (5-11). The results are given in Fig. 5.1 for the diethyl dithiophosphate system and in Fig. 5.2 for the ethyl xanthate system. Also shown in the same figures are the so-called contact curves (solid lines) from Sutherland and Wark (1955). The dashed lines are the calculated... 

Figure 5.1 Relationship between concentration of sodium diethyl dithiophosphate and critical pH dashed line is the result calculated based on Eqs. (5-4), (5-7) or (5-8) solid line is the data from Sutherland and Wark (1955)...

Diethyl disulfide, see Phorate Diethyl dithiophosphate, see Phorate Diethyl ethylthiosuccinate, see Malathion Diethylfonmmide, see Dimethylamine. Triethylamine Diethyl fumarate, see Malathion cis-Diethyl fumarate, see Malathion irans-Diethyl fumarate, see Malathion Diethylhydroxylamine, see Triethylamine 2, 6 -Diethyl-2-hydroxy-N-(methoxymethyl)acetanilide, see Alachlor... 

Based on pseudo-first-order kinetics of phorate hydrolysis, the following half-lives were reported 52 h at pH 5.7, 61 h at pH 8.5, 62 h at pH 9.4, and 33 h at pH 10.25. The major hydrolysis product is ethanethiol which quickly oxidizes to diethyl disulfide. In addition, diethyl dithiophosphate and diethyl phosphorothioate are potential products of phorate hydrolysis (Hong and Pehkonen, 1998). 

Electrophilic addition of 0,0-diethyl dithiophosphate to the double bond of 1,3,2-dioxathiole 2-oxide afforded the dithiophosphate (52) (Equation (5)) <62USP3053852>. 

The metal complexes of diethyl dithiophosphate were first investigated in 1931,134 when it was shown that the transition metal complexes [M((EtO)2PS2 ] (n = 2 or 3) were similar to those of xanthates and dialkyl dithiocarbamates, containing a four-membered XSMS (X = C or P) ring. A... 

A detailed study of the electronic spectra of the d8 complexes [M(dto)2]2 (M = Ni, Pd, Pt) and [Au(dto)2] has been reported. The spectra are virtually identical in a variety of solvents, indicating that axial perturbations due to the solvent are minimal. Dithiooxalate has a high position among square-planar NiS4 chromophores in the spectrochemical series for dithio ligands the series is maleonitriledithiolate < (CF3)2C2S2 < diethyl dithiophosphate < ethyl xanthate < diethyl dithio-carbamate < 2,3-dimercaptopropanol anion < dithiomalonate dithiooxalate.145... 

Seven papers reviewed earlier here deal with chemistry about P—S bonds,251,254-257,261,263 i.e. the peroxyhydrolysis of nerve agent (284),251 the hydrolysis of di-S-butyl phosphorothioate,254 the formation of (290),255 hydrolysis of diethyl dithiophosphate,256 the isomerization/chlorination of O, O-dialkylthiophosphate (291),257 the hydrolysis of the monothioate analogues of 5 -O-methyluridine 2 - and 3 -dimethylphosphates (293) and (294),261 and the reactivity of the ribonucleotide analogue (295).263... 

Salts of the ester 0,0 -diethyl dithiophosphate have been prepared by two different methods. One involves the reaction of (C2H50)2P(S)C1 with potassium hydrogen sulfide.1 The other is the reaction of phosphorus (V) sulfide with ethanol followed by the addition of metal halide.1-3 The second method is the basis for this preparation, although the chromium(III) compound has not previously been reported. Salts of cobalt(III), nickel(II), and lead(II) can be prepared by analogous reactions using cobalt (III) fluoride, nickel(II) chloride 6-hydrate, and lead(I) oxide, respectively. 

Caution. The apparatus should be set up in a hood, since hydrogen sulfide and hydrogen chloride are liberated during the reactions. The preparation of 0,0 -diethyl dithiophosphate is done in a nitrogen atmosphere because of the reactivity of the acid toward air and water. 

Chromium(III) (0,0 -diethyl dithiophosphate) forms beautiful flakes which are purple by reflected fight and di-chroic by transmitted fight they are purple at one angle and green at another. The salt is soluble in organic solvents but insoluble in water. It is stable toward air and water, but decomposes at temperatures above its melting point. 

Tellurium Bis[0,0-diethyl dithiophosphate]2 1.6 g(10 mmol) of tellurium dioxide are dissolved in 5 ml of hot, concentrated hydrochloric acid, the solution is cooled to 20°, 15 m/of water arc added, the mixture is stirred, and 8.3 g (40 mmol) of sodium diethyl dithiophosphate dissolved in 20 ml of water are added slowly. The resultant solution is decanted from the yellow solid formed, the solid is washed with cold ethanol, and recrystallized from ethanol or benzene yield 3.8 g (76%) m.p. 66° (dec.). 

X-ray structural investigations of diphenyl tellurium bis[O,0 -diethyl dithiophosphate] revealed the two dithiophosphates to be monodentate and located at the two apical positions of the trigonal bipyramidal molecule1,2. 

Uses of the Sulphides of Phosphorus.—The pentasulphide of phosphorus is used to replace the oxygen of organic compounds by sulphur thus ethyl alcohol gives ethyl mercaptan, and acetic acid thioacetic acid.4 The reactions, however, are somewhat complex thus with ethyl alcohol the first product has been shown to be diethyl-dithiophosphate, SP(SH)(OEt)s, the mercaptan being produced by a secondary reaction.5 Phosphorus pentasulphide, boiling under atmospheric or other definite pressure, has been recommended for use in constant temperature baths in place of sulphur. The compound P4S3, which is one of the most stable sulphides in diy air, but resembles phosphorus in some respects, is used as a substitute for this element in the manufacture of matches.6... 

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