1419075-10-7

Upstream product

• 1419075-09-4 N¹-(prop-2-yn-1-yl)-N¹,N²,N²-tris(pyridin-2-ylmethyl)ethane-1,2-diamine 
• 2101-87-3 p-methoxy-phenylazide 
• 104170-15-2 N¹,N¹,N²-tris(pyridin-2-ylmethyl)ethane-1,2-diamine 

Downstream Products

• 1419074-86-4 [(N-(1-(4-methoxy-phenyl)-1H-[1,2,3]triazol-4-ylmethyl)-N,N′,N′-tris(pyridin-2-ylmethyl)-ethane-1,2-diamine)FeCl]PF₆ 

Relevant academic research and scientific papers

Iron coordination chemistry with new ligands containing triazole and pyridine moieties. comparison of the coordination ability of the N-donors

We report the synthesis, characterization, and solution chemistry of a series of new FeII complexes based on the tetradentate ligand N-methyl-N,N′-bis(2-pyridyl-methyl)-1,2-diaminoethane or the pentadentate ones N,N′,N′-tris(2-pyridyl-methyl)-1,2-diaminoethane and N,N′,N′-tris(2-pyridyl-methyl)-1,3-diaminopropane, modified by propynyl or methoxyphenyltriazolyl groups on the amino functions. Six of these complexes are characterized by X-ray crystallography. In particular, two of them exhibit an hexadentate coordination environment around FeII with two amino, three pyridyl, and one triazolyl groups. UV-visible and cyclic voltammetry experiments of acetonitrile solutions of the complexes allow to deduce accurately the structure of all FeII species in equilibrium. The stability of the complexes could be ranked as follows: [L5Fe II-py]2+ > [L5FeII-Cl] + > [L5FeII-triazolyl]2+ > [L5FeII-(NCMe)]2+, where L5 designates a pentadentate coordination sphere composed of the two amines of ethanediamine and three pyridines. For complexes based on propanediamine, the hierarchy determined is [L5FeII-Cl]+ > [L5FeII(OTf)]+ > [L5Fe II-(NCMe)]2+, and no ligand exchange could be evidenced for [L5FeII-triazolyl]2+. Reactivity of the [L5FeII-triazolyl]2+ complexes with hydrogen peroxide and PhIO is similar to the one of the parent complexes that lack this peculiar group, that is, generation of FeIII(OOH) and Fe IV(O), respectively. Accordingly, the ability of these complexes at catalyzing the oxidation of small organic molecules by these oxidants follows the tendencies of their previously reported counterparts. Noteworthy is the remarkable cyclooctene epoxidation activity by these complexes in the presence of PhIO.