O,O'-Dialkyl Phosphorodithioic Acids as Extractants for Metals.

Using Crystal Structures of Ionic Compounds to Explore Complexation and Extraction of Rare Earth Elements in Ionic Liquids

“…A number of ILs, commonly called task-specific ILs, are designed to coordinate to and extract metal ions by incorporating known extractant moieties [26][27][28]. One such system contains dithiophosphoric acids, which have been long studied as extractants for transition metals from aqueous acids [29]. These systems, along with the structurally related dithiophosphinic acids [30], are also studied as extractants in actinide/lanthanide separations, where the presence of sulfur donor atoms gives these ligands selectivity for actinides [31,32].…”

Spectroscopic and Thermogravimetric Investigation of Cd(II) Dinonyldithiophosphate: Removal of Cadmium from Aqueous Solutions

“…Organodithio compounds are widely used in chemical and industrial applications [1][2][3]. Due to the synthesis and purifying challenges of long chains dialkyldithiophosphoric acids, their use in experiments was rare [2,4], although long chains dialkyldithiophosphoric acids are more easily transferred into the organic phase [5] and more stable against hydrolysis than the short-chain ones [6]. The well-known lubricant zinc dialkyldithiophosphate (ZDDTP) has been extensively investigated [7], but only a few articles have been published on the thermal properties of the other heavy metal dialkyldithiophosphates [8,9].…”

Preparation and Solvent Extraction of Nickel Complex of O, O'‐Dinonyldithiophosphate and its Application to Spectrophotometric Determination of Nickel in Sediment Samples

“…Dialkyldithiophosphoric acids are versatile compounds, and have been widely used for analytical and industrial applications. 1-6 Because of preparation and purification problems of long chains dialkyldithiophosphoric acids 2,4 , their use in extraction experiment were rare. Although long chains dialkyldithiophosphoric acids are more easily transferred into the organic phase 5 and more stable against hydrolysis than the short-chain ones, 6 It has been reported that dialkyldithiophosphates having lower alkyl chains such as Me, Et, Pr, i-Pr, Bu, i-Bu, s-Bu, t-Bu, C 5 H 11 , i-C 5 H 11 and 2-Ethylhexyl were used for extraction of metal ions from aqueous solutions.…”

“…2,3,5 Thermal and lubricant additive properties of the zinc dialkyldithiophosphate (alkyl= C 4 , C 6 and C 10 ) have been extensively investigated, 7 but only several articles have been published on the thermo-analytic properties of the other transition metal dialkyldithiophosphates, and a few on nickel dithiophosphates derivatives. [1][2][3][4][5][6][7][8] Since Ni is undoubtedly a serious potential hazard to the human organism, 9 the importance of determination of nickel in environmental and biological samples cannot be overemphasized. Thus, several spectrophotometric methods for determination of nickel based on the UV-visible spectra are developed and applied due to their simplicity and low costs.…”