2024
DOI: 10.1002/ejic.202400735
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Tuneable Phosphaamidinate Ligands: Alkyl‐Magnesium Complexes Responsive to Increased Ligand Bulk

Stephanie J. Urwin,
Martin W. Stanford,
Gary S. Nichol
et al.

Abstract: We describe the synthesis of five new phosphaamidine ligands of formula RNC(R’)P(H)(R’’), featuring a hindered tert‐butyl‐bearing backbone and variable steric bulk at both the nitrogen and phosphorus centres. Crystallographic and heteronuclear NMR studies indicate the geometry of the phosphaamidine is dependent on the steric bulk of the peripheral substituents, and in one case multiple isomers were observed in solution. Ligand deprotonation by reaction with 0.5 or 1 equivalents of nBu2Mg respectively forms het… Show more

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