Concept

Reactive intermediate

Related publications (127)

Ultrafast x-ray spectroscopy for structural dynamics studies in chemistry and biology - art. no. 67271P

Majed Chergui, Wojciech Gawelda, Van Thai Pham, Amal El Nahhas

Time-resolved x-ray absorption fine structure (XAFS) spectroscopy with picosecond temporal resolution is a new method to observe electronic and geometric structures of short-lived reaction intermediates. It combines an intense femtosecond laser source sync ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2007

Role of zinc content on the catalytic efficiency of B1 metallo beta-lactamases

Matteo Dal Peraro

Metallo beta-lactamases (MbetaL) are enzymes naturally evolved by bacterial strains under the evolutionary pressure of beta-lactam antibiotic clinical use. They have a broad substrate spectrum and are resistant to all the clinically useful inhibitors, repr ...

2007

Dye Dependent Regeneration Dynamics in Dye Sensitized Nanocrystalline Solar Cells: Evidence for the Formation of a Ruthenium Bipyridyl Cation/Iodide Intermediate

Michael Graetzel, Mohammad Khaja Nazeeruddin

We report a transient absorption study of the kinetics of re-reduction of ruthenium bipyridyl dye cations adsorbed to nanocrystalline TiO2 films by iodide ions, employing a series of RuII(dcbpy)2X dyes, where dcpby ) 4,4′-dicarboxy-2,2′-bipyridyl and X ) ( ...

2007

Decomposition analysis of reactivity effect predictions for modern LWR fuel

Filippo Tani

The increasing complexity and heterogeneity of modern light water reactor (LWR) fuel assemblies impose new challenges to current reactor physics codes in terms of maintaining and improving the quality of neutronics predictions for the core. In particular, ...

EPFL2006

Hydrazines and Azides via the Metal-Catalyzed Hydrohydrazination and Hydroazidation of Olefins

Jérôme Waser

The discovery, study, and implementation of the Co- and Mn-catalyzed hydrohydrazination and hydroazidation reactions of olefins are reported. These reactions are equiv. to direct hydroaminations of C-C double bonds with protected hydrazines or hydrazoic ac ...

2006

Hydrogenation of C60 at 2GPa pressure and high temperature

Yury Tsybin

Hydrogenation of C60 at 2 GPa and 723-823 K was performed with thermal decompn. of LiAlH4 as a hydrogen source. Anal. of hydrogenation products showed that the method can produce not only C60H36, but also hydrofullerides C60Hx with 44 < x < 52. Unlike othe ...

2006

Search for the Θ(1540)+ pentaquark using kaon secondary interactions at Belle

Olivier Schneider, Aurelio Bay, Mingkui Wang, Chao Wang, Tagir Aushev, Lei Zhang, Vladislav Balagura, Sun Hee Kim, Ji Hyun Kim, Jing Li

Using kaon secondary interactions in the material of the Belle detector, we search for both inclusive and exclusive production of the Θ(1540) +. We set an upper limit of 2.5% at the 90% C.L. on the ratio of the Θ(1540)+ to Λ(1520) inclusive production cros ...

2006

Fluoronaphthalene building blocks via arynes: A solution to the problem of positional selectivity

Eric Masson

When 3-fluoro- and 3-chloro-1,2-didehydrobenzenes are generated in the presence of 2-(trimethylsilyl)furan, two regioisomeric cycloadducts are formed in a 1:2 ratio. However, regioselectivity can be installed by fitting one bulky trimethylsilyl group into ...

2005

In vitro preparation of prefibrillar intermediates of amyloid-beta and alpha-synuclein

Hilal Lashuel

Elucidating the structural properties of early intermediates (protofibrils) on the fibril formation pathway of Abeta and alpha-synuclein, the structural relationship among the different intermediates and their relationship to the structure of the amyloid f ...

Humana Press2005

Further metalations and functionalizations of chloro-, bromo- and iodo(trifluoromethyl)pyridines

Fabrice Cottet

In accordance with the concept of regioexhaustive functionalization, both 3-chloro-2-(trifluoromethyl)pyridine and 2-bromo-6-(trifluoromethyl)pyridine were converted each time into the three possible carboxylic acids. 2-Bromo-4-(trifluoromethyl)pyridine, 2 ...

2004

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