Results 1 to 10 of about 24,790 (199)

Determination of the Stability Constants of Crown Ether Complexes with Protonated Amines by Solvent Extraction [PDF]

Bulletin of the Chemical Society of Japan, 1985
Abstract Stability constants of crown ether complexes with protonated primary amines were determined by the solvent extraction method. Stability constants between protonated amines(AH+) and 18-crown-6(L), logKAHL, were found to be 0.4, 0.15, 0.1, −0.05, and −0.1 for protonated methylamine, ethylamine, propylamine, butylamine, and iso ...
Hideyuki Noguchi, Masaki Yoshio
exaly   +2 more sources

Activation of the Aromatic Core of 3,3'-(Pyridine-2,6-diylbis(1H-1,2,3-triazole-4,1-diyl))bis(propan-1-ol)-Effects on Extraction Performance, Stability Constants, and Basicity. [PDF]

Inorg Chem, 2019
The "CHON" compatible water-soluble ligand 3,3'-(pyridine-2,6-diylbis(1H-1,2,3-triazole-4,1-diyl))bis(propan-1-ol) (PTD) has shown promise for selectively stripping actinide ions from an organic phase containing both actinide and lanthanide ions, by preferential complexation of the former.
Weßling P, Trumm M, Macerata E, Ossola A, Mossini E, Gullo MC, Arduini A, Casnati A, Mariani M, Adam C, Geist A, Panak PJ.   +11 more
europepmc   +6 more sources

18-Crown-6 and Dibenzo-18-crown-6 Assisted Extraction of Cesium from Water into Room Temperature Ionic Liquids and Its Correlation with Stability Constants for Cesium Complexes [PDF]

Molecules, 2009
The pH-profiles of the extraction of Cs+ into four conventional (1-butyl-3-methylimidazolium hexafluorophosphate and bis[trifluoromethyl)sulphonyl]imides of 1-butyl-3-methylimidazolium, 1-hexyl-3-methylimidazolium, and 1-(2-ethylhexyl)-3- methylimidazolium) and two novel (trioctylmethylammonium salicylate and tetrahexylammonium dihexylsulfosuccinate ...
Konstantin Popov, Igor V Pletnev, Svetlana V Smirnova   +2 more
exaly   +4 more sources

The Stability Constants of Nickel(II) Complexes with Chloride, Thiocyanate, Sulfate, Thiosulfate, and Oxalate Ions, as Determined by a Solvent Extraction Method [PDF]

Bulletin of the Chemical Society of Japan, 1976
Abstract The stability constants of nickel(II) complexes in 1 mol dm−3 sodium perchlorate media were determined at 25 °C by means of a solvent extraction method. The values thus obtained for logβ1 and logβ2 are: 0.0 and no second complex (Cl−), 1.1 and 1.6 (SCN−), 1.0 and 1.4 (SO42−), 0.9 and 1.3 (S2O32−), and 3.7 and 6.6 (C2O42 ...
Ryokichi Murai, Tatsuya Sekine, Sekinetatsuya   +2 more
exaly   +2 more sources

Determination of the parameters of thermodynamic stability constants of bromide complexes of rare earth metals for modeling the optimal regimes of hydrometallurgical extraction [PDF]

Arab Journal of Basic and Applied Sciences, 2021
Determination of the thermodynamic parameters of complex compounds of rare earth metals in aqueous solutions is of considerable interest for understanding the hydrometallurgical processes associated with the extraction and separation of yttrium and lanthanides from solutions of complex multicomponent composition.
Fialkovsky Igor Sergeevich, Litvinova Tatiana Evgenievna, Lutsky Denis Sergeevich, Alexeev Andrey Alexandrovich   +3 more
openaire   +2 more sources

Determination of Stability Constant of Cobalt(II) Acetyl Acetonate Using Solvent Extraction

, 1979
Chemistry Department, Faculty of Science, Ain Shams University, Cairo-Egypt Manuscript received 16 June 1978, accepted 22 December 1978 From the distribution of cobalt(II) acetyl acetonate in different diluents, the com­position of the extractable complexes and the extraction constants were calculated.
ALI M. EL-ATRASH, E. R. SOUAYA, W. GEORGY   +2 more
openaire   +2 more sources

The Synergistic Effect in Solvent Extraction. The Effect of the Chelating Ligands on the Stability Constant of Lutetium β-Diketonate Adducts with TOPO [PDF]

Bulletin of the Chemical Society of Japan, 1969
Abstract The steric effect and the inductive effect of the functional groups of β-diketones on the adduct formation between lutetium chelates and TOPO in benzene was studied by using various β-diketones with aliphatic groups (acetylacetone, dipropionylmethane, pivaroylacetone, diisobutyryl-methane and dipivaroylmethane), aromatic groups (
openaire   +1 more source

Optimization of ethanolic extraction of asiaticoside and asiatic acid: A stability study and correlation of dielectric constant

Applied Food Research
This study optimized the extraction of asiaticoside and asiatic acid from Centella asiatica using an ultrasonic-assisted extraction method. The research focused on ethanol concentration, extraction temperature, and extraction duration to maximize yield efficiency.
Teerin Chysirichote, Waewwan Wattanasiriwit, Chatchaporn Uraipong   +2 more
openaire   +2 more sources

Studies on the Sulfur-containing Chelating Agents. XXXIV. Determination of Stability Constant of Mercury Complex of Monothiodibenzoylmethane and Monothiothenoyltrifluoroacetone by Solvent Extraction Method

Chemical and Pharmaceutical Bulletin, 1972
Stability constants and extraction constants of mercury complexes of monothiodibenzoylmethane (SBB) and monothiothenoyltrifluoroacetone (STTA) were determined by the solvent extraction method in the presence of cyanide ion as the auxiliary complexing agent. Chloroform was used as the solvent. These values were compared with those of mercury dithizonate.
YOKOYAMA, AKIRA, NAKANISHI, NOBUKO, TANAKA, HISASHI   +2 more
openaire   +2 more sources

Unveiling the interplay: comparing solvent extraction, structure, and stability constants in a phenanthroline diamide system with trivalent lanthanides

Dalton Transactions
Phenanthroline diamide ligands have shown promise as extractants for the selective separation of the An( iii ) from the Ln( iii ) in used nuclear fuel recycling.
Emma M. Archer, Correy R. Vigil, Shane S. Galley, Jessica A. Jackson, Jenifer C. Shafer   +4 more
openaire   +2 more sources