UC Santa Barbara
Synthesis, structure and bonding of hexaphenyl thorium(IV): Observation of a non-octahedral structure
- Author(s): Pedrick, EA
- Hrobárik, P
- Seaman, LA
- Wu, G
- Hayton, TW
- et al.
Published Web Locationhttps://doi.org/10.1039/c5cc08265j
© The Royal Society of Chemistry 2016. We report herein the synthesis of the first structurally characterized homoleptic actinide aryl complexes, [Li(DME)3]2[Th(C6H5)6] (1) and [Li(THF)(12-crown-4)]2[Th(C6H5)6] (2), which feature an anion possessing a regular octahedral (1) or a severely distorted octahedral (2) geometry. The solid-state structure of 2 suggests the presence of pseudo-agostic ortho C-H⋯Th interactions, which arise from σ(C-H) → Th(5f) donation. The non-octahedral structure is also favoured in solution at low temperatures.
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