Search results for "Phosphine oxide"
showing 9 items of 49 documents
CCDC 1969476: Experimental Crystal Structure Determination
2021
Related Article: Maria-Gabriela Alexandru, Diana Visinescu, Beatrice Cula, Sergiu Shova, Renato Rabelo, Nicolás Moliner, Francesc Lloret, Joan Cano, Miguel Julve|2021|Dalton Trans.|50|14640|doi:10.1039/D1DT02512K
CCDC 1017126: Experimental Crystal Structure Determination
2015
Related Article: Marina A. Uvarova, Anna A. Sinelshchikova, Margarita A. Golubnichaya, Sergey E. Nefedov, Yulia Yu. Enakieva, Yulia G. Gorbunova, Aslan Yu. Tsivadze, Christine Stern, Alla Bessmertnykh-Lemeune, Roger Guilard|2014|Cryst.Growth Des.|14|5976|doi:10.1021/cg501157e
α-Aminophosphonates, Phosphinates, and Phosphine Oxides as Extraction and Precipitation Agents for Rare Earth Metals, Thorium, and Uranium : A Review
2022
α-Aminophosphonates, -phosphinates, and -phosphine oxides are a group of organophosphorus compounds that were investigated as extraction agents for rare earth (RE) metals and actinoids for the first time in the 1960s. However, more systematic investigations of their extraction properties towards REs and actinoids were not started until the 2010s. Indeed, recent studies have shown that these α-amino-functionalized compounds can outperform the commercial organophosphorus extraction agents in RE separations. They have also proven to be very efficient extraction and precipitation agents for recovering Th and U from RE concentrates. These actinoids coexist with REs in some of the commercially im…
Extraction Chromatographic Behavior of Rf, Zr, and Hf in HCl Solution with Styrenedivinylbenzene Copolymer Resin Modified by TOPO (trioctylphosphine …
2010
It is of great interest to study chemical properties of the transactinide elements with atomic numbers (Z) ≥ 104. One of the most important subjects is to establish the position of the elements at the extreme end of the periodic table. To this end we perform studies of chemical properties of these transactinides and compare them with those of their lighter homologues and with the ones expected from extrapolations in the periodic table. So far, chromatographic studies of the transactinides have provided experimental proof of placing rutherfordium (Rf, Z = 104) through hassium (Hs, Z = 108) into groups 4 to 8, respectively. 1-10 Quite recently, copernicium (Cn, Z = 112) has been shown to be a…
Applications and stereoselective syntheses of P-chirogenic phosphorus compounds.
2016
International audience; Phosphorus compounds bearing chirality on the P-center are usually qualified as P-chirogenic or P-stereogenic. This chemical class concerns natural products, agrochemistry, molecular materials, biology and pharmacy, although it is certainly in coordination chemistry and in asymmetric catalysis using chiral transition metal complexes that P-chirogenic phosphorus compounds are the most used. The chiral phosphine ligands and their uses in asymmetric metal-catalyzed reactions have been widely reviewed in literature. However, an overview covering the applications as well as the stereoselective syntheses of all classes of phosphorus compounds has not yet been provided. Thi…
Benson group additivity values of phosphines and phosphine oxides: Fast and accurate computational thermochemistry of organophosphorus species
2018
Composite quantum chemical methods W1X-1 and CBS-QB3 are used to calculate the gas phase standard enthalpy of formation, entropy, and heat capacity of 38 phosphines and phosphine oxides for which reliable experimental thermochemical information is limited or simply nonexistent. For alkyl phosphines and phosphine oxides, the W1X-1, and CBS-QB3 results are mutually consistent and in excellent agreement with available G3X values and empirical data. In the case of aryl-substituted species, different computational methods show more variation, with G3X enthalpies being furthest from experimental values. The calculated thermochemical data are subsequently used to determine Benson group additivity …
Benson group additivity values of phosphines and phosphine oxides : Fast and accurate computational thermochemistry of organophosphorus species
2019
Composite quantum chemical methods W1X-1 and CBS-QB3 are used to calculate the gas phase standard enthalpy of formation, entropy and heat capacity of 38 phosphines and phosphine oxides for which reliable experimental thermochemical information is limited or simply nonexistent. For alkyl phosphines and phosphine oxides, the W1X-1 and CBS-QB3 results are mutually consistent and in excellent agreement with available G3X values and empirical data. In the case of aryl-substituted species, different computational methods show more variation, with G3X enthalpies being furthest from experimental values. The calculated thermochemical data are subsequently used to determine Benson group additivity co…
CCDC 1969471: Experimental Crystal Structure Determination
2021
Related Article: Maria-Gabriela Alexandru, Diana Visinescu, Beatrice Cula, Sergiu Shova, Renato Rabelo, Nicolás Moliner, Francesc Lloret, Joan Cano, Miguel Julve|2021|Dalton Trans.|50|14640|doi:10.1039/D1DT02512K
CCDC 1907945: Experimental Crystal Structure Determination
2019
Related Article: Maria-Gabriela Alexandru, Diana Visinescu, Beatrice Braun-Cula, Sergiu Shova, Francesc Lloret, Miguel Julve|2019|Dalton Trans.|48|7532|doi:10.1039/C9DT01445D