1. Synthesis and Characterization of a Rhodium(l) σ-Alkane Complex in the Solid State.
- Author
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Pike, Sebastian D., Thompson, Amber L., Algarra, Andrés G., Apperley, David C., Macgregor, Stuart A., and Weller, Andrew S.
- Subjects
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TRANSITION metal complexes , *RHODIUM compounds synthesis , *ALKANES , *SIGMA bonds , *CARBON-hydrogen bonds , *SOLID state chemistry , *X-ray diffraction - Abstract
Transition metal-alkane complexes--termed σ-complexes because the alkane donates electron density to the metal from a a-symmetry carbon-hydrogen (C-H) orbital--are key intermediates in catalytic C-H activation processes, yet these complexes remain tantalizingly elusive to characterization in the solid state by single-crystal x-ray diffraction techniques. Here, we report an approach to the synthesis and characterization of transition metal--alkane complexes in the solid state by a simple gas-solid reaction to produce an alkane σ-complex directly. This strategy enables the structural determination, by x-ray diffraction, of an alkane (norbornane) σ-bound to a d8-rhodium(l) metal center, in which the chelating alkane ligand is coordinated to the pseudosquare planar metal center through two σ-C-H bonds. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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