Presentation is loading. Please wait.

Presentation is loading. Please wait.

Tunable σ-Accepting, Z-Type Ligands for Organometallic Catalysis

Similar presentations


Presentation on theme: "Tunable σ-Accepting, Z-Type Ligands for Organometallic Catalysis"— Presentation transcript:

1 Tunable σ-Accepting, Z-Type Ligands for Organometallic Catalysis
Di You, François P. Gabbaï  Trends in Chemistry  DOI: /j.trechm Copyright © 2019 Elsevier Inc. Terms and Conditions

2 Figure 1 Molecular Orbital Diagram for the Interaction of d10 Metal with Z-Type Ligand and Example of Molecules Containing Such Interaction. Abbreviation: LB, Lewis base. Trends in Chemistry DOI: ( /j.trechm ) Copyright © 2019 Elsevier Inc. Terms and Conditions

3 Figure 2 Influence of the Main Group Z-Type Ligand on the M→Z Interaction. (A) Illustration showing how Lewis acidity varies within the group 13 and 14 elements. (B–D) Structure of complexes and relevant metrical parameters showing how the nature of the Lewis acidic element affects the magnitude of the M→Z interaction. Abbreviation: cov. r., covalent ratio. Trends in Chemistry DOI: ( /j.trechm ) Copyright © 2019 Elsevier Inc. Terms and Conditions

4 Figure 3 Influence of the Main Group Substituents on the M→Z Interaction. (A) Diagram showing how the Lewis acidity of a main group element is affected by the electron-withdrawing properties of the substituent trans from the coordination site. (B–D) Structure of selected complexes and relevant metrical parameters showing how substituent effects impact the magnitude of the M→Z interaction. Trends in Chemistry DOI: ( /j.trechm ) Copyright © 2019 Elsevier Inc. Terms and Conditions

5 Figure 4 Influence of the Main Group Element Redox State and Charge on the M→Z Interaction. (A) Diagram showing how the Lewis acidity of a main group element is affected by oxidation. (B) Structure of complexes and relevant metrical parameters showing how oxidation impacts the magnitude of the M→Z interaction. (C) Illustration showing how anion abstraction from a main group element can be used to enhance its Lewis acidity. (D) Structure of complexes and relevant metrical parameters showing how anion removal from the main group element impacts the magnitude of the M→Z interaction. Abbreviations: LUMO, lowest unoccupied molecular orbital; NBO, natural bond orbital. Trends in Chemistry DOI: ( /j.trechm ) Copyright © 2019 Elsevier Inc. Terms and Conditions

6 Figure 5 Influence of the Main Group Z-Type Ligand on the Catalytic Properties of Selected Complexes. (A) Styrene hydrogenation catalyzed by 10Ni/E. (B) CO2 hydrosilylation reactions catalyzed by 11E and [24E]n+. Trends in Chemistry DOI: ( /j.trechm ) Copyright © 2019 Elsevier Inc. Terms and Conditions

7 Figure 6 Influence of the Main Group Z-Type Ligand on the Catalytic Properties of Selected Complexes. (A) Catalytic activity of [25]+ in an enyne cyclization reaction underscoring the role of the Au→B interaction. (B) Example showing how oxidation of the main group element acting as a Z-type ligand enhances the catalytic activity of the adjacent transition metal center. (C) Example showing how anion abstraction from the main group element acting as a Z-type ligand enhances the catalytic activity of the adjacent transition metal center. Trends in Chemistry DOI: ( /j.trechm ) Copyright © 2019 Elsevier Inc. Terms and Conditions


Download ppt "Tunable σ-Accepting, Z-Type Ligands for Organometallic Catalysis"

Similar presentations


Ads by Google