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Details of Grant 

EPSRC Reference: EP/W029057/1
Title: sigma-Aromatic Actinide-Actinide Bonding: A New Frontier in f-Block Chemistry
Principal Investigator: Liddle, Professor ST
Other Investigators:
Baker, Dr M
Researcher Co-Investigators:
Project Partners:
Aarhus University Diamond Light Source European Commission Joint Research Centr
European Synch Radiation Facility - ESRF Los Alamos National Laboratory National Nuclear Laboratory (NNL)
Rigaku Europe University of Toulouse III Paul Sabatier
Department: Chemistry
Organisation: University of Manchester, The
Scheme: Standard Research
Starts: 01 November 2022 Ends: 31 October 2025 Value (£): 897,904
EPSRC Research Topic Classifications:
Co-ordination Chemistry
EPSRC Industrial Sector Classifications:
No relevance to Underpinning Sectors
Related Grants:
Panel History:
Panel DatePanel NameOutcome
06 Apr 2022 EPSRC Physical Sciences Prioritisation Panel - April 2022 Announced
Summary on Grant Application Form
The Periodic Table is mainly composed of metals. Thus, metal-metal bonding is a vast burgeoning field that is fundamental to driving step-changes in our understanding of structure, bonding, reactivity, and magnetism. Over 177 years the s-, p-, and d-blocks have produced numerous routinely isolable examples of varied metal-metal bonding motifs. In contrast, isolable actinide-actinide (An-An) bonding, one of the top goals of synthetic An-chemistry, has remained elusive in all that time, precluding assessment of reactivity patterns that are a central tenet of understanding metal-metal bonding. This adventurous project aims to exploit our recent discovery of molecular isolable thorium-thorium bonding (Nature 2021, 598, 72-75), which describes surprising sigma-aromatic bonding to record principal quantum number 6 and 7th row of the Periodic Table and multi-electron small molecule activation reactivity. Building on our preliminary result, this project seeks to expand the range of An-An complexes, determine their reactivity trends, and probe their electronic structure and physicochemical properties using a comprehensive range of experimental and theoretical characterisation techniques. This will involve a wide range of project partners and national and international research facilities brought together into a cohesive and interleaved approach. This research is strategically important with respect to the nuclear sector, as it will retain a skilled ECR and train two new ones in a known UK skills-shortage area, and together with stakeholders we will develop 'best practice' methods for handling radioactive elements, thus promoting knowledge transfer at the academia:industry interface. By studying the compounds outlined in the project, new applications of analytical techniques will be developed, and the resulting methodological advances will develop the capability and health of those disciplines in-house, and also more broadly because those techniques involve facilities and researchers that work across many other areas that could benefit from the transfer of new working ways. This project is timely to develop and our preliminary results show the work is achievable and impactful. Thus, we request funds commensurate with the scope and ambition of the proposed work to develop this promising area in order to capitalise on our breakthrough, stay at the international forefront of this newly created and exciting field, and generate results of international significance to An-chemistry.
Key Findings
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Further Information:  
Organisation Website: http://www.man.ac.uk