Publication

Homoatomic cages and clusters of the heavier group 15 elements: neutral species and cations

Publications associées (44)

Investigation into the formation of heteronuclear clusters of formula [ Ru6C(CO)16Ag2X 2]2- (X = Cl, Br or I)

Reaction of [Ru6C(CO)16]2− with an excess of AgX (X = Cl, Br or I) affords heteronuclear clusters of formula [{Ru6C(CO)16Ag2X}2]2− in 80% yield, which for X = I and X = ...

2007

Inorganic chemistry 2003

A review. The article deals with recent highlights in inorg. chem. published in the year 2003. The chem. of the main group elements is treated. Special emphasis is laid on the structures of clusters of IVA elements and prototypical small mols. [on SciFinde ...

2004

Supported Fe nanoclusters: Evolution of magnetic properties with cluster size

Alfredo Pasquarello, Zeljko Sljivancanin

Using a density functional approach, we study structural and magnetic properties of small Fe-n clusters (nless than or equal to8) deposited on a MgO(100) substrate. Upon deposition, the clusters closely preserve their gas-phase structure. The magnetic mome ...

2003

In distribution in InGaN quantum wells: influence of phase separation, In segregation and In desorption

Nicolas Grandjean

The local In distribution in InGaN quantum wells was measured in samples which were grown by metalorganic vapor phase epitaxy (MOVPE) and molecular beam epitaxy (MBE) varying systematically the metal-flux ratio and the growth rate. The composition analyses ...

IOP2003

Chemistry with superweak anions: Gas-phase species in the solid state?

Recently we reported on the synthesis and characterization of a series of very weakly coordinating anions (WCA's) of type Al(OR)4- (R=poly or perfluorinated aliph. alkoxide). These anions produce "Pseudo Gas Phase Conditions" in the solid state that allo ...

2003

Unknown-Multiple Speaker clustering using HMM

Hervé Bourlard, Jitendra Ajmera

An HMM-based speaker clustering framework is presented, where the number of speakers and segmentation boundaries are unknown \emph{a priori}. Ideally, the system aims to create one pure cluster for each speaker. The HMM is ergodic in nature with a minimum ...

2002

Unknown-Multiple Speaker clustering using HMM

Hervé Bourlard, Jitendra Ajmera

IDIAP2002

The acidity of chloro-substituted benzenes: a comparison of gas phase, Ab initio, and kinetic data

Fabrice Cottet

The deprotonation energies of benzene, chlorobenzene, all di-, tri-, tetrachlorobenzenes, and pentachlorobenzene have been detd. in the gas phase using a Fourier transform ion cyclotron resonance mass spectrometer. The values measured differ only slightly, ...

2001

Transmission electron microscopy study of the β′ phase (Al-Mg-Si alloys) and QC phase (Al-Cu-Mg-Si alloys): ordering mechanism and crystallographic structure

Philippe Buffat, Cyril Cayron

The β′ and QC rod-shaped precipitates, observed in the Al-Mg-Si and Al-Cu-Mg-Si alloys, respectively, are studied by transmission electron microscopy (TEM). Superstructure images and microdiffraction patterns confirm the likeness between the β′ and QC phas ...

2000

Theoretical investigation of the adsorption of methanol on the (110) surface of g-alumina

Albert Renken, Lioubov Kiwi, Pierre-Yves Morgantini

The adsorption of MeOH on the (110) surface of g-alumina was studied using both ab initio and d. functional theory quantum chem. methods. A [Al3O9H10]+ cluster model comprising one tetrahedral and 2 octahedral Al cations were used to describe the surface a ...

1999

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