Laser ionization spectroscopy of Ag(NH3) n clusters

Abstract

Abstract. The ionization and the fragmentation properties of Ag(NH3), heteroclusters have been studied. The measured ion yield spectra near the threshold for complexes with n = 2-20 indicate strong differences of the cluster geometry in the electronic ground and in the ionized state, respectively. For smaller clusters (n _< 6) in the neutral ground state the nonsolvated Ag atom is localized near the surface of the complex. A modification of the surface structure at the transition to larger clusters (n > 7) is suggested by significant changes in the ionization and fragmentation behaviour. Preliminary results of ab initio calculations confirm the conclusion that due to the correlation interaction between the valence electron and the 4d electrons of the Ag atom no solvation effects occur.

Reduction of AgI1(NH3)2+to Ag01(NH3)2in Solution. Redox Potential and Spectral Study

“…Note that the present result may not be directly compared to the experimental value obtained very recently by Freudenberg et al (5.2 eV) . Since we use for both species the equilibrium geometry of Ag I 1 (NH 3 ) 2 + , our IP g value should be called the vertical electron affinity of Ag I 1 (NH 3 ) 2 + .…”

“…Since we use for both species the equilibrium geometry of Ag I 1 (NH 3 ) 2 + , our IP g value should be called the vertical electron affinity of Ag I 1 (NH 3 ) 2 + . Since the authors of ref measure the true vertical IP g of Ag 0 1 (NH 3 ) 2 , the geometry of both species in their experiment is the most stable geometry of the neutral complex, namely, a (NH 3 ) 2 cluster with a silver atom located at its surface. This explains that our IP g value is smaller.…”