Abstract

Laser-ablated Os and Ru atoms react with CO2 molecules upon cocondensation in excess argon at 7 K and neon at 4 K. Besides the dominant neutral products [OMCO, O2MCO (M = Os, Ru), O2Os(CO)2, and OCRu(O2)CO], anionic species [OMCO- (M = Os, Ru)] are also formed and identified through annealing, ultraviolet irradiation, isotopic substitution, and CCl4-doping experiments. DFT calculations have been performed on possible products, and the overall agreement between the calculated and observed vibrational absorptions supports the product identifications.

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