Uranyl ions
![Complexes of Uranyl Ions with Aromatic di- and tetra-Carboxylates Involving [Ni(bipy)$_n$]$^{2+}$ (n = 2, 3) Counter-Ions](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==)
Complexes of Uranyl Ions with Aromatic di- and tetra-Carboxylates Involving [Ni(bipy)$_n$]$^{2+}$ (n = 2, 3) Counter-Ions
... where uranyl complexes with the same ligands had previously been obtained under different experimental conditions, the topologies observed here are different, thus evidencing the structure-directing effect of the ...
30
Effects of cement organic additives on the adsorption of uranyl ions on calcium silicate hydrate phases : experimental determination and computational molecular modelling
... De plus, un effet notable du rapport Ca/Si sur la sorption du gluconate sur les C-S-H est observé, avec une sorption plus forte pour des rapports Ca/Si élevés. En effet, l’augmentation du rapport Ca/Si est corrélée au ...
193
Counterion-Controlled Formation of an Octanuclear Uranyl Cage with cis-1,2-Cyclohexanedicarboxylate Ligands
... with uranyl ions to give either two-dimensional assemblies, or a discrete, octanuclear cage of unprecedented geometry, which includes an ammonium cation hydrogen bonded to uranyl oxo ...
8
Isomerism in Benzenetricarboxylates: Variations in the Formation of Coordination Polymers with Uranyl Ion
... independent uranyl ions are in similar environments, being chelated by one carboxylate group and bound to three more carboxylate oxygen atoms from three different ligands (Figure ...one uranyl oxo ...
48
2,5-Thiophenedicarboxylate: An interpenetration-inducing ligand in uranyl chemistry
... to uranyl ions, and a regular progression is found with increasing thickness/undulation, from complex 6 in which the stacked honeycomb nets are threaded by oblique columns of counterions, to 2-fold parallel ...
31
Determination of the stability constants of uranyl/polymer complexes by differential pulse polarography
... Keywords: Uranyl; Stability constants; Differential pulse polarography ...of uranyl ions by various polymers [1-2] and polymer composites [3] with the purpose to use these polymers for the treatment ...
10
Chiral one- to three-dimensional uranyl-organic assemblies from (1R,3S)-(+)-camphoric acid
... three-dimensional uranyl –organic assemblies from (1 R,3S)-(+)-camphoric acid† Pierre Thuéry* a and Jack Harrowfield b Four complexes were obtained from reaction of uranyl nitrate with (1R,3S)-(+)-camphoric ...
10
Tetrahedral and Cuboidal Clusters in Complexes of Uranyl and Alkali or Alkaline-Earth Metal Ions with rac- and (1R,2R)-trans-1,2-Cyclohexanedicarboxylate
... ratio becomes 1:1.5 (uranyl:chdc), the uranium adopts a hexagonal bipyramidal coordination geometry involving three carboxylate chelate rings from separate ligand units, this resulting in the formation of a tetrahedral ...
46
Tubelike Uranyl–Phenylenediacetate Assemblies from Screening of Ligand Isomers and Structure-Directing Counterions
... 17 With the replacement of Zn II by Ni II , 1,4-PDA 2– gives the complex [Ni(phen) 3 ][(UO 2 ) 2 (1,4-PDA) 3 ]⋅H 2 O (4). Here also, the two independent uranyl ions are chelated by three carboxylate groups ...
42
Closed Uranyl–Dicarboxylate Oligomers: a Tetranuclear Metallatricycle with Uranyl Bridgeheads and 1,3-Adamantanediacetate Linkers
... of uranyl polycarboxylates shows great ...by uranyl ion of a number of polycarboxylate derivatives of cyclohexane 12,13,28,35,58 and ...of uranyl ion complexes of this ligand, it appears that the ...
10
Dynamique des Ions en Solution et aux interfaces : Modèles et Applications
... Le al
ul ee
tif de G ij (k, t) est ainsi obtenu en appliquant la transformation de Lapla
e inverse. A n de fa
iliter les al
uls, nous avons onsidéré pour simpli er que D 1 (z) = D 1 et D 2 (z) = D 2 . Cette ...
189
Air ions and human comfort
... Air Ions The first systematic study of air ions and their biological effect on humans, reported in Germany in 1931, involved tests of both healthy people and ...air ions of opposite charge had ...
5
Modélisation de l'adsorption des ions dans les carbones nanoporeux
... 6.1 D´ecoordination et d´esolvatation `a l’interface ´electrode /´elec- trolyte 6.1.1 Calcul du nombre de coordination Le nombre de coordination d’un ion (ou d’une mol´ecule) est le nombre de plus proches voisins qu’il ...
194
Etude des états métastables dans les ions lourds multichargés
... L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignemen[r] ...
163
Champ cristallin et spectre optique des ions dans les cristaux
... Résumé. 2014 On étudie, dans l’approximation du champ cristallin, le spectre optique des ions de transition inclus dans des cristaux. On calcule la position des niveaux d’énergie. On établit les règles de ...
22
Electron scattering on radioactive ions at GANIL
... heavy ions may have widen the therapeutic window to some extent but acute radiation reactions might still arise and be a reason for treatment interruptions or ...
75
The dressed mobile atoms and ions
... But we have to distinguish the case of atoms, i.e., the case where Z = N from the case of positive ions, i.e., the case where N < Z. The problem is connected with the necessity or not of an infrared ...
38
ARTheque - STEF - ENS Cachan | La comédie des ions
... L'école primaire de Basse Jarrie avait choisi, comme projet d'école pour l'année 1990-91, le thème de la "communication".. Ce thème développé à partir du milieu familial a logiqu[r] ...
4
Escherichia coli Response to Uranyl Exposure at Low pH and Associated Protein Regulations
... of uranyl toxicity in bacteria is necessary to optimize strains for bioremediation purposes or for using bacteria as biodetectors for bioavailable ...to uranyl at low pH to minimize uranyl ...
10
Influence de la nature des ions et des résines échangeuses sur les performances de l’électrodéionisa
... En régime de transfert élevé, les résines échangeuses d’ions demeurent sous la forme sel. Elles offrent simplement un chemin plus conducteur aux ions dont la cinétique de transfert est contrôlée par le film de ...
184