Decomposition studies of group 6 hexacarbonyl complexes. Part 1: Production and decomposition of Mo(CO)6 and W(CO)6

Usoltsev, I.; Eichler, Robert; Wang, Y.; Even, J.; Yakushev, A.; Haba, H.; Asai, M.; Brand, H.; Di Nitto, A.; Düllmann, Ch.E.; Fangli, F.; Hartmann, W.; Huang, M.; Jäger, E.; Kaji, D.; Kanaya, J.; Kaneya, Y.; Khuyagbaatar, J.; Kindler, B.; Kratz, J.V.; ... (2015). Decomposition studies of group 6 hexacarbonyl complexes. Part 1: Production and decomposition of Mo(CO)6 and W(CO)6. Radiochimica acta, 104(3) Oldenbourg 10.1515/ract-2015-2445

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Chemical studies of superheavy elements require fast and efficient techniques, due to short half-lives and low production rates of the investigated nuclides. Here, we advocate for using a tubular flow reactor for assessing the thermal stability of the Sg carbonyl complex – Sg(CO)6. The experimental setup was tested with Mo and W carbonyl complexes, as their properties are established and supported by theoretical predictions. The suggested approach proved to be effective in discriminating between the thermal stabilities of Mo(CO)6 and W(CO)6. Therefore, an experimental verification of the predicted Sg–CO bond dissociation energy seems to be feasible by applying this technique. By investigating the effect of 104,105Mo beta-decay on the formation of 104,105Tc carbonyl complex, we estimated the lower reaction time limit for the metal carbonyl synthesis in the gas phase to be more than 100 ms. We examined further the influence of the wall material of the recoil chamber, the carrier gas composition, the gas flow rate, and the pressure on the production yield of 104Mo(CO)6, so that the future stability tests with Sg(CO)6 can be optimized accordingly.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Eichler, Robert and Türler, Andreas

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry

ISSN:

0033-8230

Publisher:

Oldenbourg

Language:

English

Submitter:

Franziska Bornhauser-Rufer

Date Deposited:

22 Jan 2016 16:12

Last Modified:

07 Nov 2016 02:30

Publisher DOI:

10.1515/ract-2015-2445

BORIS DOI:

10.7892/boris.75502

URI:

https://boris.unibe.ch/id/eprint/75502

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