scholarly journals Gold Clusters in the Gas Phase

2013 ◽  
pp. 243-278 ◽  
Author(s):  
Alex P. Woodham ◽  
André Fielicke
Keyword(s):  
Gas Phase ◽  
Gold Clusters

CAPPED METAL CLUSTERS IN THE GAS PHASE

2005 ◽  
Vol 04 (05n06) ◽  
pp. 935-944 ◽  
Author(s):  
JOBIN CYRIAC ◽  
V. R. RAJEEV KUMAR ◽  
T. PRADEEP
Keyword(s):  
Gas Phase ◽  
Chain Length ◽  
Column Chromatography ◽  
Mass Spectra ◽  
Metal Clusters ◽  
Laser Desorption ◽  
Gold Clusters

Alkanethiol protected gold clusters of 29 kDa were prepared and separated by column chromatography. Laser desorption mass spectra of these clusters have been investigated. In the gas phase, monolayer–monolayer interaction leads to clustering of the protected clusters. Role of different matrices and effect of alkanethiol chain length on this process have been investigated.

scholarly journals Towards a scalable and accurate quantum approach for describing vibrations of molecule–metal interfaces

2011 ◽  
Vol 2 ◽  
pp. 427-447 ◽  
Author(s):  
David M Benoit ◽  
Bruno Madebene ◽  
Inga Ulusoy ◽  
Luis Mancera ◽  
Yohann Scribano ◽  
...  
Keyword(s):  
Gas Phase ◽  
First Principles ◽  
Gold Clusters ◽  
Computational Grids ◽  
Consistent Field ◽  
Self Consistent Field ◽  
Quantum Approach ◽  
Large Systems ◽  
Correlation Corrections ◽  
Thiophene Molecule

We present a theoretical framework for the computation of anharmonic vibrational frequencies for large systems, with a particular focus on determining adsorbate frequencies from first principles. We give a detailed account of our local implementation of the vibrational self-consistent field approach and its correlation corrections. We show that our approach is both robust, accurate and can be easily deployed on computational grids in order to provide an efficient computational tool. We also present results on the vibrational spectrum of hydrogen fluoride on pyrene, on the thiophene molecule in the gas phase, and on small neutral gold clusters.

Synthesis and gas-phase uni- and bi-molecular reactivity of bisphosphine ligated gold clusters, [AuxLy]n+

2012 ◽  
Vol 330-332 ◽  
pp. 109-117 ◽  
Author(s):  
Peter S.D. Robinson ◽  
Tich-Lam Nguyen ◽  
Hadi Lioe ◽  
Richard A.J. O’Hair ◽  
George N. Khairallah
Keyword(s):  
Gas Phase ◽  
Gold Clusters ◽  
Molecular Reactivity

Adsorption of Propene on Neutral Gold Clusters in the Gas Phase

2015 ◽  
Vol 21 (43) ◽  
pp. 15256-15262 ◽  
Author(s):  
Ewald Janssens ◽  
Hai Thuy Le ◽  
Peter Lievens
Keyword(s):  
Gas Phase ◽  
Gold Clusters

scholarly journals Far-IR Spectra of Small Neutral Gold Clusters in the Gas Phase

2014 ◽  
Vol 228 (4-5) ◽  
Author(s):  
Philipp Gruene ◽  
Burkhard Butschke ◽  
Jonathan T. Lyon ◽  
David M. Rayner ◽  
André Fielicke
Keyword(s):  
Ir Spectra ◽  
Gas Phase ◽  
Vibrational Spectra ◽  
Far Infrared ◽  
Gold Clusters

AbstractVibrational spectra of small neutral gold clusters containing up to 8 Au atoms are measured in the far-infrared (46–222 cm

Crystal structure images of large gold clusters and growing crystals by HRTEM

1984 ◽  
Vol 42 ◽  
pp. 428-429
Author(s):  
L.R. Wallenberg ◽  
J.-O. Bovin ◽  
G. Schmid
Keyword(s):  
Crystal Structure ◽  
Nucleation And Growth ◽  
Close Packing ◽  
Gold Clusters ◽  
Molecular Weight Determination ◽  
Growth Mechanisms ◽  
Starting Point ◽  
Different Types ◽  
Nucleation And Growth Mechanisms ◽  
Points Of View

Metallic clusters are interesting from various points of view, e.g. as a mean of spreading expensive catalysts on a support, or following heterogeneous and homogeneous catalytic events. It is also possible to study nucleation and growth mechanisms for crystals with the cluster as known starting point.Gold-clusters containing 55 atoms were manufactured by reducing (C6H5)3PAuCl with B2H6 in benzene. The chemical composition was found to be Au9.2[P(C6H5)3]2Cl. Molecular-weight determination by means of an ultracentrifuge gave the formula Au55[P(C6H5)3]Cl6 A model was proposed from Mössbauer spectra by Schmid et al. with cubic close-packing of the 55 gold atoms in a cubeoctahedron as shown in Fig 1. The cluster is almost completely isolated from the surroundings by the twelve triphenylphosphane groups situated in each corner, and the chlorine atoms on the centre of the 3x3 square surfaces. This gives four groups of gold atoms, depending on the different types of surrounding.

Sign in / Sign up

Export Citation Format

Share Document