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Immobilization of a copper complex based on the tripodal ligand (2-aminoethyl)bis(2-pyridylmethyl)amine (uns-penp)

Title data

Brückmann, Tim ; Becker, Jonathan ; Turke, Kevin ; Smarsly, Bernd M. ; Weiß, Morten ; Marschall, Roland ; Schindler, Siegfried:
Immobilization of a copper complex based on the tripodal ligand (2-aminoethyl)bis(2-pyridylmethyl)amine (uns-penp).
In: Zeitschrift für anorganische und allgemeine Chemie. Vol. 647 (2021) Issue 5 . - pp. 560-571.
ISSN 1521-3749

Abstract in another language

A new derivative of the ligand (2-aminoethyl)bis(2-pyridylmethyl)amine (uns-penp), capable for covalent immobilization on silica, was synthesized. Silica powder for column chromatography and mesoporous monoliths served as surface material. Functionalized silica was sufficiently characterized with reflectance UV/Vis and FTIR techniques. Copper(I) was successfully complexed with the immobilized ligand and exhibits reversible reactivity towards dioxygen at low temperatures. Suspending the oxygen species with toluene at low temperatures led to selective oxygenation to benzaldehyde, determined by GC-MS. Copper(I) complexes with the ligands Me-PTS-uns-penp and Me-Prop-uns-penp were prepared and characterized to model the reaction behavior towards dioxygen in solution. Additionally, solid copper peroxido complexes with these ligands were obtained by precipitation with the sterically demanding anion tetraphenylborate. Furthermore, these complexes could be obtained in a reversible reaction by treating corresponding copper(I) complexes with dioxygen. With all oxygenated copper complexes catalytic oxidation of toluene was observed.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: immobilization; monolith; copper complex; tripodal ligands; superoxido complex
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 24 Sep 2021 06:51
Last Modified: 07 Jun 2022 11:47