Results 191 to 200 of about 7,206 (242)

Tervalent uranium compounds

Coordination Chemistry Reviews, 2005
This review presents the preparation procedures and characterisations of almost all hitherto identified tervalent uranium compounds. Emphasis is placed on crystallographic and optical properties of the compounds. Spectroscopic properties of uranium(3+) doped single crystals are also discussed.
Janusz Drożdżyński
exaly   +2 more sources

Bispentamethylcyclopentadienyl uranium diphenylphosphide compounds

Journal of Organometallic Chemistry, 1999
Abstract Reaction of [U(Cp*)2(Me)2] with HPPh2 was the best route to the uranium(IV) diphenylphosphide compounds [U(Cp*)2(PPh2)2] 1 and [U(Cp*)2(PPh2)(Me)] 2. Thermolysis of 2 afforded the ortho-metallated complex [U(Cp*)2(PPh{o-C6H4})] 3. Reduction of 1 with KH gave the first U(III) phosphide K[U(Cp*)2(PPh2)2] 4.
Guillaume, Sophie M., Ephritikhine, Michel   +1 more
exaly   +3 more sources

Gastrointestinal absorption of uranium compounds – A review

Regulatory Toxicology and Pharmacology, 2015
Uranium occurs naturally in soil and rocks, and therefore where it is present in water-soluble form it also occurs naturally in groundwater as well as in drinking water obtained from groundwater. Animal studies suggest that the toxicity of uranium is mainly due to its damage to kidney tubular cells following exposure to soluble uranium compounds.
exaly   +3 more sources

Percutaneous absorption of uranium compounds

Environmental Research, 1983
Percutaneous absorption of soluble and insoluble uranium compounds has been induced in order to obtain information on penetration routes and the tissue injury produced by uranium salts. The high electron density of uranium provided a reliable way to visualize, by electron microscopy, the precise localization of the heavy compounds within the tissues ...
B M, de Rey, H E, Lanfranchi, R L, Cabrini   +2 more
openaire   +2 more sources

Compounds of Uranium with Carbon

1986
The carbides of uranium have aquired special importance as the main components of potential carbide nuclear fuels because of their high fissionable material density and good thermal conductivity. Uranium monocarbide is the main component in a possible carbide fuel for breeder reactors, e.g. (U0.8Pu0.2)C.
H. Holleck, H. Kleykamp
openaire   +1 more source

Phospholyl compounds of nickel and uranium

Journal of Organometallic Chemistry, 1996
Abstract The phospholylnickel compound [Ni(η 5 C 4 Me 4 P)(μ-η 1 -C 4 Me 4 P) 2 ] 1 was prep by treating NiCl 2 with two equivalents of KC 4 Me 4 P in pyridine, whereas reaction of NiCl 2 with two equivalents of [U(η 5 -C 4 Me 4 P) 3 Cl] or an excess of [U(η 5 -C 4 Me 4 P) 2 Cl 2 ] afforded the trinuclear complex [Ni(μ-η 5 ,η 1 -C 4 Me 4 P) 2 UCl ...
The´re`se Arliguie, Michel Ephritikhine, Monique Lance, Martine Nierlich   +3 more
openaire   +1 more source

Monocyclooctatetraenyl(dithiolene)uranium Compounds

European Journal of Inorganic Chemistry, 2004
AbstractThe neutral mononuclear dithiolene compounds [U(cot)(dithiolene)(tppo)2] [cot = η‐C8H8; dithiolene = dddt (9), dmio (10), mdt (11)], [U(cot)(dithiolene)(hmpa)2] [dithiolene = dddt (12), dmio (13), mdt (14)], [U(cot)(mdt)(bipy)] (15) and [U(cot)(mdt)(terpy)] (16) were obtained by treating the dimeric complexes [{U(cot)(dithiolene)}2] [dithiolene
Arliguie, T., Thuéry, Pierre, Fourmigué, M., Ephrittikhine, M.   +3 more
openaire   +1 more source

Precise titrimetric determination of uranium in high-purity uranium compounds

Talanta, 1966
A procedure has been developed for the very precise determination of uranium in high-purity uranium compounds. Uranium(VI) is reduced in a strong hydrochloric acid solution with aluminium in the presence of cadmium ions to uranium(III). It is oxidised to uranium(IV) in the presence of excess orthophosphoric acid and then quantitatively oxidised to ...
openaire   +2 more sources

Precise determination of uranium in pure uranium and uranium compounds by constant-current coulomeric titration

Talanta, 1967
A procedure is described for very precise determination of uranium in high-purity uranium and uranium compounds. Uranium(VI) is reduced in a concentrated hydrochloric acid solution by metallic aluminium in the presence of cadmium ions to uranium(III). This is oxidized to uranium(IV) by protons on addition of an excess of orthophosphoric acid, and then ...
openaire   +2 more sources

Refractive Indices of Uranium Compounds

2016
Because most of uranium oxides and their compounds contain water molecules, this table includes both anhydrous substances and crystallohydrates (Table 7.1).
Stepan S. Batsanov, Evgeny D. Ruchkin, Inga A. Poroshina   +2 more
openaire   +1 more source