Uranyl and Neptunyl Complexes - Coordination Geometry
The sulfonate group as a ligand: a fine balance between hydrogen bonding and metal ion coordination in uranyl ion complexes
... quenching uranyl excitation via energy transfer and nonradiative relaxation pathway, as frequently observed, 67 or simply to preferential absorption of the 420 nm radiation by the transition metal, 29 but the ...
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Synthesis and Characterization of Nanosized Uranyl Coordination Polymers derived from Terephthalic acid and Azoles
... Keywords: Coordination polymers, X-ray, SEM, thermal studies and biological ...the coordination polymers span scientific fields such as organic and inorganic chemistry, biology, materials science, ...
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Artificial Intelligence Perspective in Encoding of Coordination Complexes
... atom, complexes are formed with a definite geometry as a result of specific hybridization scheme of the bonding orbitals of central metal ...the complexes the determination of the appropriate ...
5
Structural Aspects of Monomeric Platinum Coordination Complexes
... Seven species with the PtP 2 Se 2 chromophore have two trans and five cis examples. Two unidentate P-donor ligands are found in one trans configurations, giving a slightly distorted square planar geometry about ...
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Studies on biologically important copper(II) / manganese(II) / uranyl(II) – norvaline binary complexes
... In coordination compounds studies, a knowledge of the magnitude of the stability constants of complexes is necessary for preliminary quantitative ...binary complexes metal(II) – norvaline have been ...
6
Assessing covalency in equatorial U N bonds:density based measures of bonding in BTP and isoamethyrin complexes of uranyl
... molecular complexes of the f-elements, which exhibit pronounced relativistic effects and strongly correlated valence electronic structure 1,2 , is a major challenge to both the experimental and theoretical ...
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Structural chemistry of metal coordination complexes at high pressure
... in coordination at the metal centre rather than on specific properties or ...Cu(II) complexes, tend to comprise individually interesting but isolated examples rather than any systematic ...to ...
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Platinum(II) n heterocyclic carbene complexes : coordination and cyclometallation
... the coordination sphere of the platinum in 6 this geometry is the one we would expect as it is the arrangement without the aryl and alkyl carbon donors being trans to each other; similar to other work, 30 ...
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Trinuclear nickel coordination complexes of phenanthrene 9,10 dione dioxime
... This arrangement permits the formation of Ni—N—O—Ni and Ni—O—Ni bridges between each square-planar Ni II atom and the pseudo-octahedral Ni II atom. The structural features of the core ligation sphere warrant special ...
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Structure-Directing Effects of Coordinating Solvents, Ammonium and Phosphonium Counterions in Uranyl Ion Complexes with 1,2-, 1,3-, and 1,4-Phenylenediacetates
... the coordination mode adopted and the periodicity of the species formed comes from the additional coligands and ...homoleptic complexes 1 and 2 crystallize as diperiodic assemblies in which both metal and ...
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New coordination compounds of uranyl ion with 3-(2-hydroxyphenyl)-1,2,4-triazole and its derivatives: synthesis and investigation of spectral properties
... Scheme 1. Synthesis of 3-(2-hydroxyphenyl)-1,2,4- triazoles and UO 2 (HL) 2 (Solv). Obtained ligands easily form coordination compounds with uranyl ion. The disappearance of the signal of hydroxyl proton in ...
6
Copper and Iron Complexes with Unusual Coordination Geometries Enforced by Phosphine Chelates
... It is likely that the cationic complexes 6.5 take on the L ligands corresponding to the solvent in which the compound is dissolved. One set of observations consistent with this hypothesis is the solvent-dependent ...
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The catalytic role of uranyl in formation of polycatechol complexes
... of uranyl ions, polymerization was observed even at pH 2 with ...by uranyl ions with subsequent transfer of electron density from the benzene ring towards ura- nyl, hence facilitating removal of H (figure ...
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AN INVESTIGATION OF THE URANYL NITRATE-TBP COMPLEXES IN HEXANE BY THE VAPOUR PRESSURE LOWERING METHOD
... Sinple molecules of various тг-guitude, icoe, and aggre- gates /diners, trimers, multiraers/ causs tJ>e sa^o effect of vapour pressure lowering of a solvent provided tbeir concentrati[r] ...
27
Large scale geometry of curve complexes
... of the curve graph to the geometry of the mapping class group and Teichm¨ uller space (note that the surfaces in these papers have punctures rather than boundary).. In [41], they proved [r] ...
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Computing morse-smale complexes with accurate geometry
... high-quality geometry, as well as the probability fields we compute for a two-dimensional jet (d); and a three-dimensional tetrahedrane molecule ...accurate geometry and thus correct connectivity of the MS ...
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Probing Hydrogen and Halogen Oxo Interactions in Uranyl Coordination Polymers:A Combined Crystallographic and Computational Study
... within uranyl hybrid materials has necessitated the development of a hierarchy of acceptor- donor pairing preferences based on a detailed knowledge of the relationship between intra- and intermolecular ...terminal ...
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Bonding and Reactivity of Gallium and Aluminium Coordination Complexes
... synthesize complexes bearing formal double bonds between either gallium or aluminium and phosphorus, trying to fill in the gap in known multiple bonded species of the p ...target complexes could then be ...
MASS SPECTRAL AND ph-metric STUDIES ON p- NlTROBENZALDEHYDE SEMI- AND THIOSEMI-CARBAZONES AND THEIR URANYL COMPLEXES
... This note highlights mass spectral studies leading to the fragmentation patterns of p-nitrobenzalde- hyde semi- and thiosemi-carbazones, and pH-metric studies on the[r] ...
6
Structural analysis and prediction of molecular geometry of chelate complexes
... The Prediction of Molecular Geometries and Relative Stabilities in Chelate Complexes : Application to Cobalt (III) Triethylenetetra.mine-.. (S)- Prolinato Complexes, D.[r] ...
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