Synthesis and structures of a family of hybrid donor N2P2 beta-diketiminate zinc complexes
| Autor: | Emily L. Nolan, Oliver G.H. Wood, Samuel A. Brunclik, Andrew Reuter, Monica Osnaya, Daron E. Janzen, Melanie H. Nevins, Chris M. Seong, Meg E. Swanson, Elodie E. Marlier, Anna K. Olson |
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| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
010405 organic chemistry Ligand Iodide chemistry.chemical_element Zinc Crystal structure 010402 general chemistry 01 natural sciences Square pyramidal molecular geometry 0104 chemical sciences Inorganic Chemistry Metal chemistry.chemical_compound Crystallography chemistry visual_art Materials Chemistry visual_art.visual_art_medium Physical and Theoretical Chemistry Linker Phosphine |
| Zdroj: | Polyhedron. 201:115150 |
| ISSN: | 0277-5387 |
| DOI: | 10.1016/j.poly.2021.115150 |
| Popis: | 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 with zinc(II) iodide. Three ligand variations have been synthesized by incorporating different substituents (methyl or methoxy) on the linker phenyl rings at positions 4 and 6. In the 4-methyl zinc complex [Tol-BDI(DIPPMeP)2ZnI] and 4-methoxy zinc complex [Tol-BDI(DIPPMeOP)2ZnI], the metal is bound to all four donors on the ligand, rendering a distorted square pyramidal geometry around the zinc metal with τ5 values of 0.25 and 0.29, respectively. However, the crystal structure of the 4,6-dimethyl zinc complex [Tol-BDI(DIPPMe2P)2ZnI] shows a four-coordinate zinc with only one phosphine bound to the metal, resulting in a distorted seesaw geometry around the metal. While X-ray crystallography shows no interactions between the metal center and the unbound phosphine, solution characterization reveals a symmetrical complex with both phosphines bound to the metal center in all three zinc complexes. |
| Databáze: | OpenAIRE |
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