Formation and Characterization of Magnesium Bisozonide and Carbonyl Complexes in Solid Argon

Abstract

The reactions of magnesium atoms with dioxygen and dioxygen/carbon monoxide mixture have been investigated by matrix isolation infrared absorption spectroscopy. Magnesium atoms react with dioxygen in solid argon to form the inserted MgO(2) molecules under UV excitation, which were previously characterized. Annealing allows the dioxygen molecules to diffuse and to react with MgO(2) and form the magnesium bisozonide complex, Mg(O(3))(2), which is proposed to be coordinated by two argon atoms in solid argon matrix. The Mg(O(3))(2)(Ar)(2) complex is characterized to have two equivalent side-on bonded ozonide ligands with a D(2h) symmetry. The coordinated argon atoms can be replaced by carbon monoxide to give the magnesium bisozonide dicarbonyl complex, Mg(O(3))(2)(CO)(2), a neutral magnesium carbonyl complex with CO binding to the Mg(2+) center.

Reactions of Mg and Mg2 with SO2 in Low-Temperature Matrices: Association or Insertion?

“…The reaction products of Mg atom with sulfur dioxide in condensing argon or neon will be characterized by matrix infrared spectra and density functional theory calculations, and by comparison to the results from analogous reactions. ,− Common species, such as SO 2 – and MgO 2 , have been identified in previous papers.…”

“…Magnesium and its complexes have aroused wide interest in the past few decades. Using matrix-isolation technology, previous studies have shown that the magnesium atom is reactive toward various reagent gases such as O 2 , NO, H 2 , and CH 4 , − and both associated complexes and Mg inserted species were reported. The reactivity of some magnesium clusters was also investigated, − which indicates that the magnesium dimer is more reactive than a single Mg atom in reactions with methyl halides .…”

Formation and Characterization of Two Interconvertible Side-On and End-On Bonded Beryllium Ozonide Complexes

“…Recent investigations in this laboratory on the reactions of metal atoms with dioxygen have shown that the metal atoms reacted with dioxygen to give initially the inserted metal dioxide molecules or metal dioxygen complexes, which further reacted with additional dioxygen in forming various unprecedented oxygen-rich complexes in the experiments with excess oxygen. − In this paper, we provide a joint matrix isolation infrared spectroscopic and theoretical study on the reactions of beryllium atoms and O 2 . Two interconvertible beryllium ozonide complexes were prepared and identified, which may serve as ideal models in understanding the mechanism of ozonation in the oxidation reactions at the molecular level.…”

Formation and Infrared Spectroscopic Characterization of Three Oxygen-Rich BiO4 Isomers in Solid Argon

“…Reactions of these dioxide species with a second O 2 molecule lead to MO 4 , an end-on bonded superoxo complex of Ga and In. , Even an oxygen-rich complex was reported for magnesium. A bisozonide complex, Mg(O 3 ) 2 with two equivalent side-on bonded ozonide ligands with D 2 h symmetry was formed via metal atom and dioxygen reactions in solid argon …”

“…A bisozonide complex, Mg(O 3 ) 2 with two equivalent side-on bonded ozonide ligands with D 2h symmetry was formed via metal atom and dioxygen reactions in solid argon. 39 Here we report a combined matrix isolation infrared spectroscopic and theoretical study of three oxygen-rich BiO 4 isomers formed by metal atom and dioxygen reactions in solid argon matrix.…”