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Abstract Bidentate phosphines are important ligands in inorganic and organometallic chemistry. However, their electron-donating ability is generally limited by the use of alkyl groups at the phosphorus atoms. Herein, we… Click to show full abstract
Abstract Bidentate phosphines are important ligands in inorganic and organometallic chemistry. However, their electron-donating ability is generally limited by the use of alkyl groups at the phosphorus atoms. Herein, we report two different approaches to strongly electron-donating bidentate phosphines: In the first strategy imidazolin-2-ylidenamino-substituted phosphorus atoms were linked by 1,1′-ferrocene (5) or 1,2-benzene (4) ligand backbones. The second synthetic access is based on linking the imidazolin-2-ylidenamino substituents by an alkyl chain (3). The bidentate phosphines 3–5 were used to synthesize the cationic gold(I) complex [(3)Au][SbF6], the palladium(II) complex [(3)PdCl2], as well as the nickel(0) complexes [(4)Ni(η2:η2-cod)] and [(5)2Ni2(μ,η2:η2-cod)].
Journal Title: Journal of Organometallic Chemistry
Year Published: 2020
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