Symmetrical CCC-NHC pincer metal complexes and symmetrical bimetallic complexes: bio-activity, and applications to organic transformations and energy-related catalytic methods

Patent metadata

Field	Value
Publication number	US-11084839-B2
Application number	US-201816036932-A
Country	US
Kind code	B2
Filing date	Jul 16, 2018
Priority date	Jul 14, 2017
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

Provided herein are a symmetrical pincer metal and bimetallic complexes. The symmetrical pincer metal complex includes a structure according to Formula I:wherein M is a metal; each N and N′ is independently nitrogen or carbon; Z is selected from the group consisting of CH, C, and N; n is 0-3; each L is independently a neutral or charged ligand; and each R is independently an alkyl, Nx, CH2TMS. The symmetrical bimetallic complex includes a structure according to Formula II:wherein M is a metal; each N and N′ is independently nitrogen or carbon; Z is selected from the group consisting of CH, C, and N; n is 0-3; each L is independently a neutral or charged ligand; and wherein each R is independently an alkyl, Nx, CH2TMS. Also provided herein is a method of catalyzing a reaction including administering one or more of the compounds disclosed herein.

First claim

What is claimed is:

1. A method of catalyzing reduction of CO 2 comprising administering a complex having a structure according to Formula I:

wherein M is a transition metal;
wherein each N and N′ is independently nitrogen;
wherein Z is selected from the group consisting of CH, C, and N;
wherein n is 0-3;
wherein each L is independently a neutral or charged ligand;
wherein each R is independently an alkyl, 3,3-dimethylbutyl (Nx), or CH 2 Si(CH 3 ) 3 (trimethylsilylmethyl); and
wherein the dashed lines are independently a 6 membered ring including Z and the ortho C, N═CH, or HC═CH.

2. The method of claim 1 , wherein at least one L is selected from the group consisting of monodentate, bidentate, and tridentate ligands.

3. The method of claim 1 , wherein at least one L is selected from the group consisting of halogen, alkyl, aryl, biaryl, substituted aryl, aryloxy, acetate, trifluoroacetate, and alkoxy.

4. The method of claim 3 , wherein at least one L is a halogen.

5. The method of claim 3 , wherein the alkyl is selected from the group consisting of methyl, ethyl, propyl, butyl, pentyl, and hexyl.

6. The method of claim 3 , wherein the substituted aryl is a fluoro substituted aryl.

7. The method of claim 1 , wherein the alkyl of R is selected from the group consisting of methyl, ethyl, propyl, butyl, pentyl, and hexyl.

8. The method of claim 1 , wherein M is Ni.

9. The method of claim 8 , wherein the complex is selected from the group consisting of:

10. The method of claim 1 , wherein M is Pt.

11. The method of claim 10 , wherein the complex is selected from the group consisting of:

12. The method of claim 1 , wherein M is Pd.

13. The method of claim 12 , wherein the complex is selected from the group consisting of:

Assignees

• Univ Mississippi State
• Univ Mississippi

Inventors

• Hollis Thedford Keith
• Webster Charles Edwin
• Delcamp Jared H

Classifications

• C25B1/00

  Electrolytic production of inorganic compounds or non-metals · CPC title

• C07F15/04 Primary

  Nickel compounds · CPC title

• C07F15/006

  Palladium compounds · CPC title

• C07F15/0086

  Platinum compounds · CPC title

• C01B13/0203

  from inorganic compounds · CPC title