Inorganic Chemistry

Polarised Covalent Thorium(IV)- and Uranium(IV)-Silicon Bonds


We report the synthesis and characterisation of isostructural thorium(IV)- and uranium(IV)- silanide complexes, providing the first structurally authenticated Th-Si bond and a rare example of a molecular U-Si bond. These complexes therefore present the first opportunity to directly compare the chemical bonding of Th-Si and U-Si bonds. Quantum chemical calculations show significant and surprisingly similar 7s, 6d, and 5f orbital contributions from both actinide (An) elements in polarised covalent An-Si bonds


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Supplementary material

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Chemrxiv 2020 AnSi SI
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ChemRxiv 2020 AnSi
Thumbnail image of Chemrxiv_2020_AnSi_SI.docx
Chemrxiv 2020 AnSi SI