Regular Article

Dissociative ionization of the potential focused electron beam induced deposition precursor π-allyl ruthenium(II) tricarbonyl bromide, a combined theoretical and experimental study^*,†

¹ Science Institute and Department of Chemistry University of Iceland, Dunhagi 3, 107 Reykjavík, Iceland
² Department of Chemistry, Johns Hopkins University, Baltimore, USA
³ Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA

^a e-mail: odduring@hi.is

Received: 18 March 2019
Received in final form: 26 July 2019
Published online: 29 October 2019

Abstract

Here we present a combined theoretical and experimental study on dissociative ionization of (η³-allyl)Ru(CO)₃Br, a potential precursor for focused electron beam induced deposition. Experimental appearance energies are determined by electron impact ionization and relative cross sections for selected fragmentation channels are presented from their respective thresholds to about 70 eV incident electron energy. Threshold energies for individual fragmentation channels are computed at the hybrid density functional and coupled cluster level of theory and compared to the respective experimental appearance energies.