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Amido phosphine complexes of zinc
Lan-Chang Liang1, Wei-Ying Lee, Chen-Hsiung Hung
1Department of Chemistry and Center for Nanoscience & Nanotechnology, National Sun Yat-sen University, Kaohsiung 80424, Taiwan. lcliang@mail.nsysu.edu.tw
Inorganic Chemistry
|September 3, 2003
Summary
Researchers synthesized novel amido phosphine complexes of zinc, specifically [NP]ZnR and [NP](2)Zn. These new zinc compounds were prepared using organozinc precursors and a unique phosphine ligand.
Area of Science:
- Organometallic Chemistry
- Coordination Chemistry
- Inorganic Synthesis
Background:
- Amido phosphine ligands offer unique steric and electronic properties.
- Zinc complexes are valuable in catalysis and materials science.
- Exploration of novel ligand environments for main group metals is ongoing.
Purpose of the Study:
- To report the first synthesis and characterization of amido phosphine complexes of zinc.
- To investigate the reactivity of a novel amido phosphine ligand with organozinc reagents.
- To explore the formation of both three-coordinate and homoleptic zinc complexes.
Main Methods:
- Reaction of N-(2-diphenylphosphinophenyl)-2,6-diisopropylaniline (H[NP]) with dimethylzinc (ZnMe2) or diethylzinc (ZnEt2).
- Metathesis reaction between zinc chloride (ZnCl2) and lithium N-(2-diphenylphosphinophenyl)-2,6-diisopropylanilide (Li[NP]).
- Reactions were conducted in diethyl ether at low temperatures (-35 °C).
Main Results:
- Successful synthesis of monomeric, three-coordinate amido phosphine zinc complexes, [NP]ZnR (R = Me, Et).
- Formation of the homoleptic complex, [NP](2)Zn, via metathesis.
- Characterization of these novel zinc complexes is implied.
Conclusions:
- The first examples of amido phosphine complexes of zinc have been successfully prepared.
- The synthetic routes provide access to both mono- and bis-amido phosphine zinc species.
- This work expands the scope of organozinc chemistry with novel ligand systems.