Synthesis and structures of a family of hybrid donor N2P2 beta-diketiminate zinc complexes
作者： Daron E. Janzen , Elodie E. Marlier , Meg E. Swanson , Andrew Reuter , Melanie H. Nevins
DOI: 10.1016/J.POLY.2021.115150
关键词:
摘要: Abstract Monoanionic mixed N2P2 donor beta-diketiminate (BDI) ligands with phosphine pendant arms, 2-(4-tolyl)-bis(2-diisopropylphosphinophenyl)propenediimine (abbreviated as Tol-BDI(DIPPP)2H), were prepared and metallated zinc(II) iodide. Three ligand variations have been synthesized by incorporating different substituents (methyl or methoxy) on the linker phenyl rings at positions 4 6. In 4-methyl zinc complex [Tol-BDI(DIPPMeP)2ZnI] 4-methoxy [Tol-BDI(DIPPMeOP)2ZnI], metal is bound to all four donors ligand, rendering a distorted square pyramidal geometry around τ5 values of 0.25 0.29, respectively. However, crystal structure 4,6-dimethyl [Tol-BDI(DIPPMe2P)2ZnI] shows four-coordinate only one metal, resulting in seesaw metal. While X-ray crystallography no interactions between center unbound phosphine, solution characterization reveals symmetrical both phosphines three complexes.
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