Formation of mixed-metal binuclear carbonyl ions [MCr(CO)n]+ in the gas phase by the laser ablation-molecular beam method

Abstract

In the laser ablation–molecular beam (LAMB) method, laser ablation of metal substrates in vacuum is utilized for the formation of novel organometallic and metal complex compounds containing monopositive metal ions. Mixed‐metal binuclear carbonyl ions [MCr(CO)n]+, n=0–6, are prepared in the gas phase by the reaction of laser‐ablated metal ions (M+) and Cr(CO)6 in the molecular beam injected nearby. The relative abundance of these ions, for M=transition metals, can essentially be explained by the M+–Cr bond dissociation energies. Results of density functional calculation show that this is essentially valid. © 1997 John Wiley & Sons, Ltd.

Limited coordination number and competitive coordination in ammonia–water mixed-ligand complexes of monopositive metal ions as studied by the laser-ablation–molecular beam method: Experiment and simulation

“…We named this very simple and versatile technique the ''laser-ablation-molecular beam ͑LAMB͒'' method. 11,12 So far we have studied reactions of a variety of monopositive metal ions with amines, 13 benzene, 14 benzene clusters, 15 chromium hexacarbonyl, 16,17 dimanganese decacarbonyl, 18 ammonia clusters, 19 and methanol clusters. 20 In the latter two cases, relative abundance of clustered complex ions M ϩ ͑L͒ m ͑L is ammonia or methanol͒ is characterized by intensity gaps, where the relative abundance of complex ions decreases discontinuously.…”