Formation of stoichiometrically 18O-labelled oxygen from the oxidation of 18O-enriched water mediated by a dinuclear manganese complex—a mass spectrometry and EPR study. Beckmann, K., Uchtenhagen, H., Berggren, G., Anderlund, M. F., Thapper, A., Messinger, J., Styring, S., & Kurz, P. Energy & Environmental Science, 1(6):668–676, December, 2008. Publisher: The Royal Society of Chemistry
Formation of stoichiometrically 18O-labelled oxygen from the oxidation of 18O-enriched water mediated by a dinuclear manganese complex—a mass spectrometry and EPR study [link]Paper  doi  abstract   bibtex   
Oxygen formation was detected for the oxidations of various multinuclear manganese complexes by oxone (HSO5−) in aqueous solution. To determine to what extent water was the source of the evolved O2, H218O isotope-labelling experiments coupled with membrane inlet mass spectrometry (MIMS) were carried out. We discovered that during the reaction of oxone with [Mn2(OAc)2(bpmp)]+ (1), stoichiometrically labelled oxygen (18O2) was formed. This is the first example of a homogeneous reaction mediated by a synthetic manganese complex where the addition of a strong chemical oxidant yields 18O2 with labelling percentages matching the theoretically expected values for the case of both O-atoms originating from water. Experiments using lead acetate as an alternative oxidant supported this finding. A detailed investigation of the reaction by EPR spectroscopy, MIMS and Clark-type oxygen detection enabled us to propose potential reaction pathways.
@article{beckmann_formation_2008,
	title = {Formation of stoichiometrically {18O}-labelled oxygen from the oxidation of {18O}-enriched water mediated by a dinuclear manganese complex—a mass spectrometry and {EPR} study},
	volume = {1},
	issn = {1754-5706},
	url = {https://pubs.rsc.org/en/content/articlelanding/2008/ee/b811806j},
	doi = {10.1039/B811806J},
	abstract = {Oxygen formation was detected for the oxidations of various multinuclear manganese complexes by oxone (HSO5−) in aqueous solution. To determine to what extent water was the source of the evolved O2, H218O isotope-labelling experiments coupled with membrane inlet mass spectrometry (MIMS) were carried out. We discovered that during the reaction of oxone with [Mn2(OAc)2(bpmp)]+ (1), stoichiometrically labelled oxygen (18O2) was formed. This is the first example of a homogeneous reaction mediated by a synthetic manganese complex where the addition of a strong chemical oxidant yields 18O2 with labelling percentages matching the theoretically expected values for the case of both O-atoms originating from water. Experiments using lead acetate as an alternative oxidant supported this finding. A detailed investigation of the reaction by EPR spectroscopy, MIMS and Clark-type oxygen detection enabled us to propose potential reaction pathways.},
	language = {en},
	number = {6},
	urldate = {2024-11-29},
	journal = {Energy \& Environmental Science},
	author = {Beckmann, Katrin and Uchtenhagen, Hannes and Berggren, Gustav and Anderlund, Magnus F. and Thapper, Anders and Messinger, Johannes and Styring, Stenbjörn and Kurz, Philipp},
	month = dec,
	year = {2008},
	note = {Publisher: The Royal Society of Chemistry},
	pages = {668--676},
}

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