An Intramolecular Bis(Amino)Phosphine‐Stabilised Phosphinidene: Synthesis and CuCl Coordination
Year: 2024
Type: article
Abstract: Extending the available intramolecularly‐stabilised phosphinidene ligands, we report a novel naphthalene supported system derived from readily available starting materials. Specifically, 1,8‐bis(diaminophosphino)naphthalene, naphth‐1,8‐{P(NEt2)2}2 (1), reacts with ethereal HCl to form the mixed diphosphine naphth‐1‐(PCl2)‐8‐{P(NEt2)2} 2 as a phosphoranide Zwitterion, which is readily reduced with elemental Mg in forming the target intramolecularly‐stabilised phosphinidene 3. The electronic nature of this species is explored through computational DFT, NBO, and TD‐DFT analyses, indicating a high electron density at the PI centre, which delocalizes across the naphthalene ring lending this deep red‐purple compound its colour. The coordination capacity of 3 is demonstrated through its reaction with excess CuCl, which surprisingly leads to exclusive formation of the 2 : 1 complex of 3 to Cu, giving initial insights into the coordination chemistry of this novel ligand.
Authors: Lisa N. Kreimer, Terrance J. Hadlington
Institution: Technical University of Munich
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,860
OpenAlex ID: W4404066745