Projects per year
Abstract
The tris(pyrazolyl)methane compound HC(3-Ad-5-Mepz)3 [1, 3-Ad-5-Mepz=3-(1-adamantyl)-5-methylpyrazolyl] and its regioisomer, HC(3-Ad-5-Mepz)2(3-Me-5-Adpz), were synthesized and crystallographically characterized. Deprotonation of 1 with MeLi afforded the lithium complex [{κ3-N-C(3-Ad-5-Mepz)3}Li(thf)], which incorporates a tris(pyrazolyl)methanide ligand of unprecedented bulk. Reaction of 1 with MeMgI gave the ionic coordination complex [{κ3-N-HC(3-Ad-5-Mepz)3}MgMe]I, which was readily deprotonated to afford the neutral compound [{κ3-N-C(3-Ad-5-Mepz)3}MgMe]. The related magnesium butyl compound [{κ3-N-C(3-Ad-5-Mepz)3}MgBu] was prepared from the reaction of 1 and MgBu2. Treating this with LiAlH4 or LiAlD4 led to rare examples of terminal magnesium hydride/deuteride complexes, [{κ3-N-C(3-Ad-5-Mepz)3}MgH/D]. All neutral magnesium alkyl and hydride compounds were crystallographically authenticated. Reaction of [{κ3κN-C(3-Ad-5-Mepz)3}Li(thf)] with [YbI2(thf)2] yielded the first structurally characterized f-block tris(pyrazolyl)methanide complex, [{κ3-N-C(3-Ad-5-Mepz)3}YbI(thf)].
Original language | English |
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Pages (from-to) | 447-454 |
Number of pages | 8 |
Journal | Chemistry - An Asian Journal |
Volume | 10 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2015 |
Keywords
- calcium
- magnesium
- reduction
- steric bulk
- ytterbium
Projects
- 2 Finished
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Low oxidation state magnesium complexes: multitalented reagents for sustainable chemical synthesis
Jones, C. & Stasch, A.
Australian Research Council (ARC), Monash University
2/01/14 → 21/12/17
Project: Research
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New reactivity from unusual main group compounds
Stasch, A.
Australian Research Council (ARC), Monash University
29/03/12 → 31/03/16
Project: Research