Presentation Title

Methylation of secondary amines in macrocyclic metal complexes using dimethylsulfoxide anion deprotonation

Faculty Mentor

Michael H. Schmidt

Start Date

23-11-2019 10:00 AM

End Date

23-11-2019 10:45 AM

Location

213

Session

poster 3

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

The primary focus of this project was on researching techniques for the synthesis of [Co (N,N”-dimethyl (Me6)[14]4,11-diene)](PF6). This complex was chosen due to its similarity to Co complexes known to bind CO2, and Ni complexes which have shown effective electro-catalytic reduction of CO2 to CO. Such reactions could potentially be used in photo-electrochemical “artificial photosynthesis.” Because previous methylations of macrocyclic complexes involved deprotonation of amine nitrogens by DMSO anions followed by treatment with CH3I. Initial work was focused on verifying the methylation strategy on a secondary amine, piperidine. Having verified the general strategy in our laboratory, phase II of this research focused on creating the starting ligand, synthesizing the macrocycle ring, and introducing Ni to the macrocycle. The nickel complex was chosen because of the relative stability of the Ni(II) oxidation state. Methylation of the nickel complex is currently underway.

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Nov 23rd, 10:00 AM Nov 23rd, 10:45 AM

Methylation of secondary amines in macrocyclic metal complexes using dimethylsulfoxide anion deprotonation

213

The primary focus of this project was on researching techniques for the synthesis of [Co (N,N”-dimethyl (Me6)[14]4,11-diene)](PF6). This complex was chosen due to its similarity to Co complexes known to bind CO2, and Ni complexes which have shown effective electro-catalytic reduction of CO2 to CO. Such reactions could potentially be used in photo-electrochemical “artificial photosynthesis.” Because previous methylations of macrocyclic complexes involved deprotonation of amine nitrogens by DMSO anions followed by treatment with CH3I. Initial work was focused on verifying the methylation strategy on a secondary amine, piperidine. Having verified the general strategy in our laboratory, phase II of this research focused on creating the starting ligand, synthesizing the macrocycle ring, and introducing Ni to the macrocycle. The nickel complex was chosen because of the relative stability of the Ni(II) oxidation state. Methylation of the nickel complex is currently underway.