Search Results - "E. Merbach, André"

First Solvation Shell of the Cu(II) Aqua Ion: Evidence for Fivefold Coordination by Pasquarello, Alfredo, Petri, Ingrid, Salmon, Philip S., Parisel, Olivier, Car, Roberto, Tóth, Éva, Powell, D. Hugh, Fischer, Henry E., Helm, Lothar, Merbach, André E.

“…We determined the structure of the hydrated Cu(II) complex by both neutron diffraction and first-principles molecular dynamics. In contrast with the generally…”
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High Relaxivity Confined to a Small Molecular Space: A Metallostar-Based, Potential MRI Contrast Agent by Livramento, João Bruno, Tóth, Éva, Sour, Angélique, Borel, Alain, Merbach, André E., Ruloff, Robert

“…Good things come in small packages: For its moderate molecular weight, the metallostar complex [Fe{Gd2L(H2O)4}3]4− (see picture; L is a…”
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NMR study of ligand exchange and electron self-exchange between oxo-centered trinuclear clusters [Fe3(μ3-O)(μ-O2CR)6(4-R'py)3](+/0) by Novitchi, Ghenadie, Helm, Lothar, Anson, Christopher, Powell, Annie K, Merbach, André E

“…The syntheses, single crystal X-ray structures, and magnetic properties of the homometallic μ₃-oxo trinuclear clusters [Fe₃(μ₃-O)(μ-O₂CCH₃)₆(4-Phpy)₃](ClO₄)…”
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Understanding Paramagnetic Relaxation Phenomena for Water-Soluble Gadofullerenes by Laus, Sabrina, Sitharaman, Balaji, Tóth, Éva, Bolskar, Robert D, Helm, Lothar, Wilson, Lon J, Merbach, André E

“…Water-soluble, endohedral gadofullerenes exhibit considerably higher relaxivities than clinically used Gd3+-chelates and are currently explored as potential…”
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Rotational Dynamics Account for pH-Dependent Relaxivities of PAMAM Dendrimeric, Gd-Based Potential MRI Contrast Agents by Laus, Sabrina, Sour, Angélique, Ruloff, Robert, Tóth, Éva, Merbach, André E.

“…The EPTPA5− chelate, which ensures fast water exchange in GdIII complexes, has been coupled to three different generations (5, 7, and 9) of polyamidoamine…”
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Isomerization Mechanisms of Stereolabile tris- and bis-Bidentate Octahedral Cobalt(II) Complexes: X-ray Structure and Variable Temperature and Pressure NMR Kinetic Investigations by Riblet, Fabrice, Novitchi, Ghenadie, Scopelliti, Rosario, Helm, Lothar, Gulea, Aurelian, Merbach, André E

“…The isomerization dynamics of five labile octahedral Co(II) compounds have been investigated by variable temperature and pressure 1H and 19F NMR spectroscopy…”
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Design of Gd(III)-Based Magnetic Resonance Imaging Contrast Agents:  Static and Transient Zero-Field Splitting Contributions to the Electronic Relaxation and Their Impact on Relaxivity by Benmelouka, Meriem, Borel, Alain, Moriggi, Loick, Helm, Lothar, Merbach, André E

“…A multiple-frequency (9.4−325 GHz) and variable-temperature (276−320 K) electron paramagnetic resonance (EPR) study on low molecular weight gadolinium(III)…”
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Gadolinium(III) complexes of mono- and diethyl esters of monophosphonic acid analogue of DOTA as potential MRI contrast agents: solution structures and relaxometric studies by Lebdusková, Petra, Hermann, Petr, Helm, Lothar, Tóth, Eva, Kotek, Jan, Binnemans, Koen, Rudovský, Jakub, Lukes, Ivan, Merbach, André E

“…Two new macrocyclic DOTA-like chelates containing one phosphonate pendant arm were synthesised as potential contrast agents for MRI (magnetic resonance…”
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Mechanism of Pyridine−Ligand Exchanges at the Different Labile Sites of 3d Heterometallic and Mixed Valence μ3-oxo Trinuclear Clusters by Novitchi, Ghenadie, Riblet, Fabrice, Scopelliti, Rosario, Helm, Lothar, Gulea, Aurelian, Merbach, André E

“…The syntheses and single crystal X-ray structural analysis of five novel hetero- and homometallic μ3-oxo trinuclear cluster with the formula [FeIII…”
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Inorganic and Bioinorganic Solvent Exchange Mechanisms by Helm, Lothar, Merbach, André E

“…The simplest reaction on a metal ion in aqueous or nonaqueous solution is the exchange of a solvent molecule between the first and second coordination shells…”
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Lanthanide(III) Complexes of DOTA-Glycoconjugates: A Potential New Class of Lectin-Mediated Medical Imaging Agents by André, João P., Geraldes, Carlos F. G. C., Martins, José A., Merbach, André E., Prata, Maria I. M., Santos, Ana C., de Lima, João J. P., Tóth, Éva

“…The synthesis and characterization of a new class of DOTA (1,4,7,10‐tetrakis(carboxymethyl)‐1,4,7,10‐tetraazacyclododecane) monoamide‐linked glycoconjugates…”
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NMR Study of Ligand Exchange and Electron Self-Exchange between Oxo-Centered Trinuclear Clusters [Fe3(μ3-O)(μ-O2CR)6(4-R′py)3]+/0 by Novitchi, Ghenadie, Helm, Lothar, Anson, Christopher, Powell, Annie K, Merbach, André E

“…The syntheses, single crystal X-ray structures, and magnetic properties of the homometallic μ3-oxo trinuclear clusters [Fe3(μ3-O)(μ-O2CCH3)6(4-Phpy)3](ClO4)…”
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[CpRu((R)-Binop-F)(H2O)][SbF6], a New Fluxional Chiral Lewis Acid Catalyst:  Synthesis, Dynamic NMR, Asymmetric Catalysis, and Theoretical Studies by Alezra, Valérie, Bernardinelli, Gérald, Corminboeuf, Clémence, Frey, Urban, Kündig, E. Peter, Merbach, André E, Saudan, Christophe M, Viton, Florian, Weber, Jacques

“…The C 2-symmetric electron-poor ligand (R)-BINOP-F (4) was prepared by reaction of (R)-BINOL with bis(pentafluorophenyl)-phosphorus bromide in the presence of…”
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Multiple-Frequency and Variable-Temperature EPR Study of Gadolinium(III) Complexes with Polyaminocarboxylates: Analysis and Comparison of the Magnetically Dilute Powder and the Frozen-Solution Spectra by Benmelouka, Meriem, Van Tol, Johan, Borel, Alain, Nellutla, Saritha, Port, Marc, Helm, Lothar, Brunel, Louis-Claude, Merbach, André E.

“…An electron paramagnetic resonance (EPR) study of glasses and magnetically dilute powders of [Gd(DTPA)(H2O)]2−, [Gd(DOTA)(H2O)]−, and macromolecular…”
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The Periodic Table and Kinetics? by Lothar Helm, André E. Merbach

“…Mendeleev in his first publication ordered the chemical elements following an apparent periodicity of properties such as atomic volume and valence. The…”
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Reactivity of the Organometallic fac-[(CO)3ReI(H2O)3]+ Aquaion. Kinetic and Thermodynamic Properties of H2O Substitution by SALIGNAC, Bernadette, GRUNDLER, Pascal V., CAYEMITTES, Sonia, FREY, Urban, SCOPELLITI, Rosario, MERBACH, André E., HEDINGER, Roman, HEGETSCHWEILER, Kaspar, ALBERTO, Roger, PRINZ, Ulrich, RAABE, Gerhard, KöLLE, Ulrich, HALL, Syd

“…The water exchange process on [(CO)(3)Re(H(2)O)(3)](+) (1) was kinetically investigated by (17)O NMR. The acidity dependence of the observed rate constant…”
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Solution X-ray Absorption Fine Structure Study of the Eu2+ and Sr2+ Ions:  Unexpected Solvent and Metal Ion Dependencies of the Solvation Numbers by Moreau, Gilles, Scopelliti, Rosario, Helm, Lothar, Purans, Juris, Merbach, André E

“…Structural parameters of the Sr2+ and, for the first time, of the Eu2+ ions in nonaqueous solutions were determined by the X-ray absorption fine structure…”
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A starburst-shaped heterometallic compound incorporating six densely packed gd(3+) ions by Livramento, João Bruno, Sour, Angélique, Borel, Alain, Merbach, André E, Tóth, Eva

“…The heterotritopic ligand [bpy(DTTA)2]8- has two diethylenediamine-tetraacetate units for selective lanthanide(III) coordination and one bipyridine function…”
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Water-Soluble Gadofullerenes:  Toward High-Relaxivity, pH-Responsive MRI Contrast Agents by Tóth, Éva, Bolskar, Robert D, Borel, Alain, González, Gabriel, Helm, Lothar, Merbach, André E, Sitharaman, Balaji, Wilson, Lon J

“…The water-soluble endohedral gadofullerene derivatives, Gd@C60(OH) x and Gd@C60[C(COOH)2]10, have been characterized with regard to their MRI contrast agent…”
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A high-frequency EPR study of frozen solutions of Gd(III) complexes: straightforward determination of the zero-field splitting parameters and simulation of the NMRD profiles by Benmelouka, Meriem, Van Tol, Johan, Borel, Alain, Port, Marc, Helm, Lothar, Brunel, Louis Claude, Merbach, André E

“…Gd(III) (S = 7/2) polyaminocarboxylates, used as contrast agents for Magnetic Resonance Imaging (MRI), were studied in frozen solutions by…”
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