Synthesis and Characterization of the First Sandwich Complex of
Trivalent Thorium:  A Structural Comparison with the Uranium
Analogue

Parry, Julian S.; , Cloke; Coles, Simon J.; Hursthouse, Michael B.

doi:10.1021/ja9903633.s001

ja9903633_si_001.pdf (1.02 MB)

Synthesis and Characterization of the First Sandwich Complex of Trivalent Thorium: A Structural Comparison with the Uranium Analogue

journal contribution

posted on 1999-07-14, 00:00 authored by Julian S. Parry, Cloke, Simon J. Coles, Michael B. Hursthouse

Reduction of the bulky 8-annulene thorium complex [Th{COT(TBS)₂}₂] (COT(TBS)₂ = η-C₈H₆(tBuMe₂Si)₂-1,4) by potassium yields the anionic compound {Th[COT(TBS)₂]₂}K·(DME)₂, which was crystallographically characterized and is the first sandwich complex of Th(III). EPR spectroscopy indicates that the molecule possesses a 6d¹ ground state. A structural comparison is made with the isostructural uranium(III) complex and the thorium(IV) parent compound.