Work

Dimerization in TMPA-Based Copper(I) Complexes: Implications for Redox Kinetics and Thermodynamics

Year: 2025

Type: article

Abstract: Copper complexes of tris(2-pyridylmethyl)amine (TPA, TMPA, or TPMA) are widely studied for their redox activity and catalytic versatility. This study investigates solvent-dependent speciation of copper(I)-TMPA complexes, revealing a monomer-dimer equilibrium in solution. Using electrochemical analysis, variable-temperature NMR spectroscopy, and X-ray crystallography, we identify an embraced dimer with a lower reduction potential and faster electron transfer than the monomer. Notably, while the monomer displays strong solvent dependence, the dimer's redox properties remain largely invariant, reflecting its intrinsic stability.

Source: Inorganic Chemistry

DOI: 10.1021/acs.inorgchem.5c01099

Authors: Marcos Tapia, Shyam K. Pahari, Sandip Das, Firoz Shah Tuglak Khan, Shabnam Hematian

Institution: University of North Carolina at Greensboro

Language: English

Topic: Inorganic and Organometallic Chemistry

Subfield: Organic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,500