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Dalton Transactions

A non-innocent radical-anionic nitrosoarene ligand regularizes a formal palladium(i) complex to palladium(ii)

Doaa R. Ramadan, ORCID logo ab   Manar Ahmed Fouad, ORCID logo ab   Francesco Ferretti, ORCID logo a   Artur Brotons Rufes,c   Piero Macchi, ORCID logo d   Lorenzo Sorace, ORCID logo e   Martí Gimferrer, ORCID logo f   Chiara Costabile ORCID logo *c  and  Fabio Ragaini ORCID logo *a  

* Corresponding authors

a Dipartimento di Chimica, Università di Milano, V. C. Golgi 19, 20133 Milano, Italy
E-mail: fabio.ragaini@unimi.it

b Chemistry Department, Faculty of Science, Alexandria University, P.O. Box 426, Alexandria 21321, Egypt

c Dipartimento di Chimica e Biologia “A. Zambelli”, Università di Salerno, V. Giovanni Paolo II, 84084 Fisciano, SA, Italy
E-mail: ccostabile@unisa.it

d Dipartimento di Chimica, Materiali e Ingegneria Chimica, Politecnico di Milano, V. Bassini 6b, 20133 Milano, Italy

e Dipartimento di Chimica “Ugo Schiff” & Udr INSTM Università di Firenze Via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy

f Institut für Physikalische Chemie, Georg-August Universität, Göttingen, Tammanstr. 6, Göttingen 37077, Germany

Abstract

Attempts to synthesize a phenanthroline palladium(0) complex with an η2-coordinated nitrosoarene starting from a palladium(II) precursor and the corresponding aryl hydroxylamine afforded instead apparent palladium(I) metallacyclic complexes that, on a closer inspection, were proven to be Pd(II) complexes with a new kind of radical-anionic nitrosoarene ligand.

Graphical abstract: A non-innocent radical-anionic nitrosoarene ligand regularizes a formal palladium(i) complex to palladium(ii)

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DOI
https://doi.org/10.1039/D6DT01038E
Article type
Paper
Submitted
04 May 2026
Accepted
22 May 2026
First published
26 May 2026
This article is Open Access
Creative Commons BY-NC license

Dalton Trans., 2026, Advance Article

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A non-innocent radical-anionic nitrosoarene ligand regularizes a formal palladium(I) complex to palladium(II)

D. R. Ramadan, M. A. Fouad, F. Ferretti, A. Brotons Rufes, P. Macchi, L. Sorace, M. Gimferrer, C. Costabile and F. Ragaini, Dalton Trans., 2026, Advance Article , DOI: 10.1039/D6DT01038E

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