Journal Article

PUBDB-2025-04602

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Variable Coordination of Peroxide in a Dinuclear Copper Mono‐Oxygenase Model Complex Supported by a Pyridazine‐Bridged Ligand

Stüber, A.Extern* ; Jurgeleit, R.Extern* ; Berger, K. ; Grimm-Lebsanft, B.Extern* ; Buchenau, S. ; Senft, L. ; Näther, C. ; Ivanović-Burmazović, I. ; Rübhausen, M. (Corresponding author) ; Naumova, M. (Corresponding author)XFEL.EU*DESY* ; Tuczek, F. (Corresponding author)Extern*

2025
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/ejic.202500286  doi:10.3204/PUBDB-2025-04602

Abstract: Copper-oxygen intermediates play an important role in nature as active species of many copper-containing enzymes. However, copper-oxygen intermediates have a key function not only in nature, but also in industry, for example as catalysts. Herein a study on a dinuclear copper complex is presented based on the literature known ligand BPMPD. This ligand combines features of the previously investigated systems (octadentate N-donor, like the MO8 system and pyridine donors, like the bdpdz system). Oxygenation of the Cu(I)-complex with O$_2$ at low temperature leads to the formation of a μ-1,2-peroxo intermediate (Cu$_2$O$_2$), which is characterized with UV/Vis-, rRaman- and X-ray absorption spectroscopy (XAS), as well as by cryo-UHR-electrospray ionization mass spectrometry. The Cu$_2$O$_2$ species can be reversibly converted into a μ-1,1-hydroperoxo intermediate (Cu$_2$OOH) by a reaction with lutidinium triflate and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), which can be monitored by UV/Vis and XAS. Furthermore, the reactivity of the Cu$_2$O$_2$ species toward dihydroanthracene is investigated.

Note: cc-by

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. PETRA-S (FS-PETRA-S)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. DFG project G:(GEPRIS)458902672 - Exom-Sequenzierung für Patienten mit chronisch entzündlichen Darmerkrankungen, die mit Biologika behandelt wurden (458902672) (458902672)

Experiment(s):

1. PETRA Beamline P65 (PETRA III)

Appears in the scientific report 2025

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Database coverage:
; ; ; Chemical Reactions ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; Index Chemicus ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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