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Synthesis and Properties of a Fifteen‐Coordinate Complex: The Thorium Aminodiboranate [Th(H3BNMe2BH3)4]
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Synthesis and Properties of a Fifteen‐Coordinate Complex: The Thorium Aminodiboranate [Th(H3BNMe2BH3)4]

Scott R Daly, Paula M. B Piccoli, Arthur J Schultz, Tanya K Todorova, Laura Gagliardi and Gregory S Girolami
Angewandte Chemie International Edition, Vol.49(19), pp.3379-3381
04/26/2010
DOI: 10.1002/anie.200905797
PMID: 20301151

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Abstract

Playing with a full deck: Single‐crystal X‐ray and neutron diffraction data show that the Th center in the title complex 1 (see structure; Th orange, B beige, N purple, C black, H blue) forms bonds with 15 H atoms, thus making 1 the first crystallographically characterized example of a complex with a Werner coordination number of fifteen. DFT calculations suggest that 1 adopts the fully symmetric 16‐coordinate structure in the gas phase.
actinides density functional calculations neutron diffraction boron coordination numbers

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