Thorium redox chemistry is extremely scarce due to the high stability of ThIV. Here we report two unique examples thorium arenide complexes prepared by reduction a ThIV-siloxide complex in presence naphthalene, mononuclear [K(OSi(OtBu)3)3Th(η6-C10H8)] (1) and inverse-sandwich [K(OSi(OtBu)3)3Th]2(μ-η6,η6-C10H8)] (2). The electrons stored these allow broad range substrates (N2O, AdN3, CO2, HBBN)....

The factors influencing the level of U-232 contamination in U-233 are examined for heavy-water-moderated, light-water-moderated and liquid-metal cooled fast breeder reactors fueled with natural or low-enriched uranium and containing thorium mixed with the uranium or in separate target channels. U-232 decays with a 69-year half-life through 1.9-year half-life Th-228 to Tl-208, which emits a 2.6 ...

The values of K~ for sulfoacetic and 3-sulfop:i:'oBionic acids were determined potentiometrically. The values are (8.6 t 0.3) x 10-~ and (3.0 t O.l) x lo-5, respectively. These values or Ka2 were much lower. than those predicted by the Branch and Calvin equation for the calculation of values or pKa of derivf.tives of acetic acid. The presence of intramolecular hydrogen bonds in sulfoacetate and...

pain in icu patients should be managed effectively and safely. fentanyl and paracetamol are used frequently in icu. however experience using iv paracetamol in the setting of critically ill patients is limited. we evaluated the analgesic effect and adverse reactions of intravenous paracetamol compared to fentanyl in icu patients with mild to moderate pain. forty patients in a general icu were ra...

We report herein the synthesis of the first structurally characterized homoleptic actinide aryl complexes, [Li(DME)3]2[Th(C6H5)6] (1) and [Li(THF)(12-crown-4)]2[Th(C6H5)6] (2), which feature an anion possessing a regular octahedral (1) or a severely distorted octahedral (2) geometry. The solid-state structure of 2 suggests the presence of pseudo-agostic ortho C-H···Th interactions, which arise ...

A poly(vinyl chloride)-based membrane composed of dithio-tetraaza macrocyclic compound as a neutral carrier with sodium tetraphenylborate (NaTPB) as an anion excluder and nitrobenzene (NB) as plasticizer was prepared and investigated as a Th(IV)-selective electrode. The electrode exhibits a Nernstian slope of 14.2 +/- 0.3 mV per decade over a wide concentration range (1.0 x 10(-6) to 1.0 x 10(-...