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- Title
Cyclopropylmagnesium Scorpionates: A Missing Member of the Series with Both Staggered and Eclipsed Rotamers in the Crystal.
- Authors
Dufrois, Quentin; Mallet‐ladeira, Sonia; Dinoi, Chiara; Etienne, Michel
- Abstract
The reaction of the hydrotris(3,5‐dimethylpyrazolyl)borate potassium salt KTpMe2 with [Mg(c‐C3H5)2(dioxane)x] gives [TpMe2Mg(c‐C3H5)] (1) in 70 % yield. Full characterization includes an X‐ray diffraction study, which reveals the presence of both staggered and eclipsed rotamers around the Mg–C bond of 1 in the unit cell. There is no evidence for any agostic interaction. Complex 1 does not undergo the Schlenk equilibrium. The complex [(F12‐Tp4Bo,3Ph)Mg(c‐C3H5)] (2) containing a hydrotris(tetrafluoro‐3‐phenylindazolyl)borate scorpionate ligand, is obtained in 20 % yield. Complex 2 proved to be significantly more labile than 1, solutions of 2 giving readily [Mg(F12‐Tp4Bo,3Ph)2] (3). This study emphasizes the importance of tuning the steric and electronic properties of the scorpionate ligands for the stabilization of heteroleptic magnesium alkyl complexes.
- Subjects
POTASSIUM salts; CONFORMATIONAL isomers; ALKYL compounds; X-ray diffraction; HYDROBORATION kinetics
- Publication
European Journal of Inorganic Chemistry, 2018, Vol 2018, Issue 20/21, p2387
- ISSN
1434-1948
- Publication type
Article
- DOI
10.1002/ejic.201800073