M
Mark J. Riley
Researcher at University of Queensland
Publications - 137
Citations - 2555
Mark J. Riley is an academic researcher from University of Queensland. The author has contributed to research in topics: Electron paramagnetic resonance & Jahn–Teller effect. The author has an hindex of 28, co-authored 136 publications receiving 2390 citations. Previous affiliations of Mark J. Riley include University of Bern & University of Tasmania.
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Journal ArticleDOI
An unprecedented Fe(III)(mu-OH)Zn(II) complex that mimics the structural and functional properties of purple acid phosphatases.
Ademir Neves,Mauricio Lanznaster,Adailton J. Bortoluzzi,Rosely A. Peralta,Annelise Casellato,Eduardo Ernesto Castellano,Paul Herrald,Mark J. Riley,Gerhard Schenk +8 more
TL;DR: It is demonstrated that the μ-hydroxo group in the {FeIII(μ-OH)(μ-ROPO3)ZnII} intermediate is unable to hydrolyze the monoester 2,4-dinitrophenylphosphate (DNPP), which suggests that theμ-hydroxyo group is a significantly poorer nucleophile than the terminally FeIII-bound OH- group.
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Interpretation of the temperature dependent g values of the Cu(H2O)2+6 ion in several host lattices using a dynamic vibronic coupling model
TL;DR: In this article, the ground state dynamics of the complexes have been modeled on the cubic E×e Jahn-Teller Hamiltonian perturbed by an orthorhombic lattice strain, and the results are compared with those reported previously by Silver and Getz, who used a simple model involving temperature dependent equilibria between energy levels corresponding to different orientations of the Cu(H2O)2+ 6 ions in the host lattices to interpret the temperature dependence of the gtensors.
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Electronic Structure and Spectro-Structural Correlations of FeIIIZnII Biomimetics for Purple Acid Phosphatases: Relevance to DNA Cleavage and Cytotoxic Activity
Rosely A. Peralta,Adailton J. Bortoluzzi,Bernardo de Souza,Rafael Jovito,Fernando R. Xavier,Ricardo Alexandre Alves de Couto,Annelise Casellato,Faruk Nome,Andrew Dick,Lawrence R. Gahan,Gerhard Schenk,Graeme R. Hanson,Flávia C. S. de Paula,Elene C. Pereira-Maia,Sergio Machado,Patricia Cardoso Severino,Claus Tröger Pich,Tiago Bortolotto,Hernán Terenzi,Eduardo E. Castellano,Ademir Neves,Mark J. Riley +21 more
TL;DR: This study establishes benchmarks against accurate crystallographic structural information using spectroscopic techniques that are not restricted to single crystals and shows that the cytotoxic activity of the biomimetics on leukemia and lung tumoral cells is highest for complexes with electron-donating groups.
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Effects of vibronic coupling on the EPR spectra of copper(II) doped K2ZnF4
TL;DR: In this article, the magnitudes and temperature dependence of the single crystal g-values of ≈≈ 1% Cu2+ doped into tetragonal K2ZnF4 measured over a temperature range between 4 and 295 K are reported.
Journal ArticleDOI
A new heterobinuclear FeIIICuII complex with a single terminal FeIII–O(phenolate) bond. Relevance to purple acid phosphatases and nucleases
Mauricio Lanznaster,Ademir Neves,Adailton J. Bortoluzzi,Veronika V. E. Aires,Bruno Szpoganicz,Hernán Terenzi,Patricia Cardoso Severino,Julie M. Fuller,Simon C. Drew,Lawrence R. Gahan,Graeme R. Hanson,Mark J. Riley,Gerhard Schenk +12 more
TL;DR: 1 is one of the most effective model complexes to date, mimicking the function of nucleases, and is significantly more reactive than its isostructural homologues with different metal composition.