On the mechanism of water oxidation by a bimetallic manganese catalyst: a density functional study.
|Abstract||Density functional theory is used to explore possible mechanisms that lead to water oxidation by a bimetallic manganese catalyst developed by McKenzie and co-workers. On the basis of our calculations we propose that the key active intermediate is a mixed valent Mn(III)(μ-O)Mn(IV)-O˙ oxyl radical species, the oxyl centre being the site of nucleophilic attack by water. The mixed-valent species is in equilibrium with an isomeric diamond-core Mn(IV)( ... [truncated at 450 characters in length]|
|Author||Sameera, WM; McKenzie, CJ; McGrady, JE;|
|Key phrase||Catalysis Electrophoresis, Capillary Manganese Molecular Structure Organometallic Compounds Oxidation-Reduction Spectrometry, Mass, Electrospray Ionization Spectrophotometry, Ultraviolet Water|
[Contrast enhanced MR-angiography (CE-MRA): do contrast media with higher T1 relaxation improve imaging of carotid stenoses?].
|Abstract||CE-MRA is a powerful tool for the non-invasive evaluation of carotid artery occlusive disease. However, due to certain drawbacks, it has not completely replaced DSA. The purpose of this study was to evaluate if Gd-BOPTA, a contrast agent with high T1 relaxivity, can increase the diagnostic accuracy of CE-MRA.|
|Author||Friese, S; Krapf, H; Fetter, M; et al|
|Key phrase||Aged Carotid Artery, Internal Carotid Stenosis Contrast Media Female Humans Magnetic Resonance Angiography Male Meglumine Middle Aged Observer Variation Organometallic Compounds Reproducibility of Results Sensitivity and Specificity|
[Enhanced MR-angiography (CE-MRA) of the supraaortic arteries: dose reduction with a contrast agent of high relaxivity (Gd-BOPTA)].
|Abstract||Reducing the amount of contrast medium in contrast-enhanced MR-angiography (CE-MRA) of the cervical vessels could lead to considerable cost reduction. This study investigates whether the amount of contrast medium possessing high relaxivity can be reduced without loss of diagnostic information.|
|Author||Friese, S; Klose, U; Kastrup, A; et al|
|Key phrase||Aged Aged, 80 and over Carotid Artery, Internal Carotid Stenosis Contrast Media Dose-Response Relationship, Drug Female Humans Image Enhancement Magnetic Resonance Angiography Male Meglumine Middle Aged Organometallic Compounds Sensitivity and Specificity|
SYNTHESIS AND CHARACTERIZATION OF [(ETA-C5ME5)RU(MU,ETA-C5ME5)RU(ETA-C5ME5)]+[A]-, [A]-=TCNE, TCNQ, C3[C(CN)2]3 - CRYSTAL-STRUCTURE OF THE ONE-DIMENSIONAL SALT [ETA-C5ME5)RU(MU,ETA-C5ME5)RU(ETA-C5ME5)]+[TCNE]-
|Author||OHARE, D; BROOKES, J; WATKIN, D;|
|Key phrase||CHARGE-TRANSFER SALTS METALLOCENE CRYSTAL STRUCTURE MAGNETISM ORGANOMETALLIC COMPLEX|
MULTINUCLEAR SOLID-STATE NUCLEAR-MAGNETIC-RESONANCE STUDY OF 2-AMINOETHYLFERROCENE AND ITS INTERCALATION COMPOUNDS WITH THE LAYERED HOST LATTICES MOO3 AND ALPHA-ZR(HPO4)2H2O
|Author||MASON, S; BULL, L; GREY, C; et al|
|Key phrase||ORGANOMETALLIC INTERCALATION AMINOFERROCENE SOLID-STATE NUCLEAR MAGNETIC RESONANCE|