Abstract / Description of output
The reaction of the heteroleptic Nd(III) iodide, [Nd(L')(N '')(mu-I)] with the potassium salts of primary aryl amides [KN(H)Ar'] or [KN(H)Ar*] affords heteroleptic, structurally characterised, low-coordinate neodymium amides [Nd(L')(N '')(N(H)Ar')] and [Nd(L')(N '')(N(H)Ar*)] cleanly(L' = t-BuNCH2CH2[C{NC(SiMe3)CHNt-Bu}], N '' = N(SiMe3)(2), Ar' = 2,6-Dipp(2)C(6)H(3), Dipp = 2,6-(Pr2C6H3)-C-i, Ar* = 2,6-(2,4,6-(Pr3C6H2)-C-i)(2)C6H3). The potassium terphenyl primary amide [KN(H)Ar*] is readily prepared and isolated, and structurally characterised. Treatment of these primary amide-containing compounds with alkali metal alkyl salts results in ligand exchange to give alkali metal primary amides and intractable heteroleptic Nd(III) alkyl compounds of the form [Nd(L')(N '')(R)] (R = CH2SiMe3, Me). Attempted deprotonation of the Nd-bound primary amide in [Nd(L')(N '')(N(H)Ar*)] with the less nucleophilic phosphazene superbase Bu'N = P{N = P(NMe2)(3)}(3) resulted in indiscriminate deprotonations of peripheral ligand CH groups.
Original language | English |
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Pages (from-to) | 603-611 |
Number of pages | 9 |
Journal | Comptes Rendus Chimie |
Volume | 11 |
Issue number | 6-7 |
DOIs | |
Publication status | Published - 2008 |
Keywords / Materials (for Non-textual outputs)
- neodymium
- lanthanide
- N-heterocyclic carbene
- amido
- N-ligand
- alkali metal
- phosphazene
- C-H ACTIVATION
- STRUCTURAL-CHARACTERIZATION
- ORGANOMETALLIC COMPOUNDS
- YTTRIUM COMPLEXES
- CARBON-DIOXIDE
- REDUCTION
- CHEMISTRY
- LIGANDS
- BASES
- DIPP