Issue 18, 2010
From the journal:

Dalton Transactions

Tuning the electronic properties of dppz-ligands and their palladium(ii) complexes†

Katharina Butsch,a   Ronald Gust,b   Axel Klein,*a   Ingo Ottc  and  Marco Romanskia  

* Corresponding authors

a Universität zu Köln, Institut für Anorganische Chemie, Greinstraße 6, Köln, Germany
E-mail: axel.klein@uni-koeln.de

b Institut für Pharmazie, Pharmazeutische Chemie, Freie Universität Berlin, Königin-Luise-Strasse 2+4, Berlin, Germany

c Institute of Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, Braunschweig, Germany

Abstract

New organometallic palladium complexes of the general type [(RR′dppz)Pd(Me)L]n+ (RR′dppz = derivatives of dipyrido[3,2-a:2′,3′-c]phenazine with RR′ = 11-Cl, 11,12-Cl2, 11-CF3, 11-NO2, 11-NH2; L = Cl, 1-methyluracilate (n = 0), pyridine, cytosine, caffeine, or 1-methylcytosine, (all n = 1) were characterised and studied in detail by electrochemical and spectroscopic (NMR, UV/Vis- absorption and emission) methods. EPR spectroscopy and density functional calculations reveal markedly tuneable lowest unoccupied molecular orbitals (LUMO) located at the dppz ligands. Cytotoxicity experiments on HT-29 colon carcinoma and MCF-7 breast cancer cell lines show promising activities for selected compounds.

Graphical abstract: Tuning the electronic properties of dppz-ligands and their palladium(ii) complexes

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Article information

DOI
https://doi.org/10.1039/B926233D
Article type
Paper
Submitted
11 Dec 2009
Accepted
01 Mar 2010
First published
25 Mar 2010

Dalton Trans., 2010,39, 4331-4340

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Tuning the electronic properties of dppz-ligands and their palladium(II) complexes

K. Butsch, R. Gust, A. Klein, I. Ott and M. Romanski, Dalton Trans., 2010, 39, 4331 DOI: 10.1039/B926233D

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