We describe the synthesis, solid state and solution properties of two families of uranyl(VI) complexes that are ligated by neutral monodentate and anionic bidentate P=O, P=NH and As=O ligands bearing pendent phenyl chromophores. The uranyl(VI) ions in these complexes possess long-lived photoluminescent LMCT (3)Π(u) excited states, which can be exploited as a sensitive probe of electronic struct...

Uranyl nitrate inhibited the transport of several amino acids, a vitamin, and a disaccharide into yeast.

In complexes with the uranyl dication salophen ligands are highly puckered. This implies that non-symmetrically substituted uranyl-salophen derivatives exist in principle as a pair of enantiomers. However, due to easy disrotations about the bonds connecting the phenoxide units to the imine carbons, the rate of interconversion between enantiomeric forms of simple, sterically unhindered compounds...

Chemical studies have been carried out on the interaction of DNA with uranyl salts. The effect of variations in pH, salt concentration, and structural integrity of the DNA on the stoichiometry of the salt-substrate complex have been investigated. At pH 3.5 DNA interacts with uranyl ions in low concentration yielding a substrate metal ion complex with a UO(2) (++)/P mole ratio of about (1/2) and...

Immersion of tissue in aqueous uranyl acetate be-for giving some degree of contrast to components fore embedding is commonly practiced to increase such as membranes when they extend through the the contrast on sections which are subsequently thickness of the section parallel to the electron stained (2, 3, 5). The treatment is only satisfactory beam. A simple modification of current practice 540

2,2?:6?,2??-Terpyridine-4?-carboxylate (tpyc ? ) forms both homo- and heterometallic uranyl ion complexes including a chiral, twofold interpenetrated polymer involving the “expanded ligand” Ni(tpyc) 2 .

Reaction of uranyl cations with phthalic (H2pht) or isophthalic (H2ipht) acids under solvohydrothermal conditions was performed in the presence 3d-block metal associated chelating n...