Large Effect of a Small Substitution: Competition of Dehydration with Charge Retention and Coulomb Explosion in Gaseous [(bipy(R))Au(mu-O)(2)Au(bipy(R))](2+) Dications

Abstract

Dinuclear gold(III) clusters with a rhombic Au2O2 core and substituted 2,2'-bipyridyl ligands are examined by tandem mass spectrometry. The fragmentation behavior of the mass-selected dications reveals an exceptionally pronounced effect of substitution.

Keywords

• dications
• electrospray ionization
• gold cluster
• gold oxide