Supplementary material for the article: Wang, L.; Zlatar, M.; Vlahović, F.; Demeshko, S.; Philouze, C.; Molton, F.; Gennari, M.; Meyer, F.; Duboc, C.; Gruden, M. Experimental and Theoretical Identification of the Origin of Magnetic Anisotropy in Intermediate Spin Iron(III) Complexes. Chemistry - A European Journal 2018, 24 (20), 5091–5094. https://doi.org/10.1002/chem.201705989

Supplementary material for: [https://doi.org/10.1002/chem.201705989]Related to published version: [http://cherry.chem.bg.ac.rs/handle/123456789/2130

Supplementary information for: "Origin of the Zero-Field Splitting in Mononuclear Octahedral Mn-IV Complexes: A Combined Experimental and Theoretical Investigation"

Additional EPR spectra and computational details. Cartesian coordinates of all structures reoriented in a standard way, as explained in the main text.This is the supporting information for the article: Zlatar, M., Gruden, M., Vassilyeva, O. Y., Buvaylo, E. A., Ponomarev, A. N., Zvyagin, S. A., Wosnitza, J., Krzystek, J., Garcia-Fernandez, P.,& Duboc, C. (2016). Origin of the Zero-Field Splitting in Mononuclear Octahedral Mn-IV Complexes: A Combined Experimental and Theoretical Investigation. Inorganic Chemistry, American Chemical Society (ACS)., 55(3), 1192-1201. [https://doi.org/10.1021/acs.inorgchem.5b02368]The published version of the article: [https://cer.ihtm.bg.ac.rs/handle/123456789/1955

A high-valent non heme μ-oxo MnIV dimer generated from a thiolate-bound MnII complex and O2

International audienceThis study deals with the unprecedented reactivity of dinuclear non-heme MnII -thiolate complexes with O2 , which dependent on the protonation state of the initial MnII dimer selectively generates either a di-μ-oxo or μ-oxo-μ-hydroxo MnIV complex. Both dimers have been characterized by different techniques including single-crystal X-ray diffraction and mass spectrometry. Oxygenation reactions carried out with labeled 18 O2 unambiguously show that the oxygen atoms present in the MnIV dimers originate from O2 . Based on experimental observations and DFT calculations, evidence is provided that these MnIV species comproportionate with a MnII precursor to yield μ-oxo and/or μ-hydroxo MnIII dimers. Our work highlights the delicate balance of reaction conditions to control the synthesis of non-heme high-valent μ-oxo and μ-hydroxo Mn species from MnII precursors and O2

Supplementary information for: "Origin of the Zero-Field Splitting in Mononuclear Octahedral Mn-IV Complexes: A Combined Experimental and Theoretical Investigation"

Additional EPR spectra and computational details. Cartesian coordinates of all structures reoriented in a standard way, as explained in the main text.This is the supporting information for the article: Zlatar, M., Gruden, M., Vassilyeva, O. Y., Buvaylo, E. A., Ponomarev, A. N., Zvyagin, S. A., Wosnitza, J., Krzystek, J., Garcia-Fernandez, P.,& Duboc, C. (2016). Origin of the Zero-Field Splitting in Mononuclear Octahedral Mn-IV Complexes: A Combined Experimental and Theoretical Investigation. Inorganic Chemistry, American Chemical Society (ACS)., 55(3), 1192-1201. [https://doi.org/10.1021/acs.inorgchem.5b02368]The published version of the article: [https://cer.ihtm.bg.ac.rs/handle/123456789/1955

Supporting Information for: "Combined Experimental and Theoretical Investigation of the Origin of Magnetic Anisotropy in Pentagonal Bipyramidal Isothiocyanato Co(II), Ni(II), and Fe(III) Complexes with Quaternary-Ammonium-Functionalized 2,6-Diacetylpyridine Bisacylhydrazone"

Comparison of the EPR spectra of 1 and 2 (Figure S1); additional Mössbauer spectra (Figures S2–S5); Kohn–Sham molecular orbitals with dominant metal d character (Figures S6–S8); calculated principal components of the g-tensor (Table S1); calculated J values (Table S2); transition energies and contributions of the excited states to D and E (Tables S3–S6); d-orbital splitting according to AI-LFT (Table S7); composition of the multideterminant wave function of the ground and selected excited states (Table S8).This is Supplementary information for: Darmanović Darinka, Shcherbakov Igor N., Duboc Carole, Spasojević Vojislav, Hanžel Darko, Anđelković Katarina, Radanović Dušanka, Turel Iztok, Milenković Milica R., Gruden Maja, Čobeljić Božidar, Zlatar Matija, "Combined Experimental and Theoretical Investigation of the Origin of Magnetic Anisotropy in Pentagonal Bipyramidal Isothiocyanato Co(II), Ni(II), and Fe(III) Complexes with Quaternary-Ammonium-Functionalized 2,6-Diacetylpyridine Bisacylhydrazone" 123, no. 51 (2019):31142-31155, [https://dx.doi.org/ 10.1021/acs.jpcc.9b08066 ]The published version of the article: [http://cer.ihtm.bg.ac.rs/handle/123456789/3314]The peer-reviewed version of the article: [http://cer.ihtm.bg.ac.rs/handle/123456789/3269

Combined Experimental and Theoretical Investigation of the Origin of Magnetic Anisotropy in Pentagonal Bipyramidal Isothiocyanato Co(II), Ni(II), and Fe(III) Complexes with Quaternary-Ammonium-Functionalized 2,6-Diacetylpyridine Bisacylhydrazone

Magnetic anisotropy in pentagonal bipyramidal complexes of Co(II) (1 and 2), Fe(III) (3 and 4), and Ni(II) (5) with a 2,2′-[2,6-pyridinediylbis(ethylidyne-1-hydrazinyl-2-ylidene)]bis[N,N,N-trimethyl-2-oxoethanaminium] equatorial ligand and isothiocyanato axial ligands has been investigated by magnetic susceptibility measurements, powder X-band electron paramagnetic resonance (EPR) spectroscopy, Mössbauer spectroscopy, ab initio, and ligand-field density functional theory (LFDFT) calculations. The studied complexes display three distinct types of magnetic anisotropy. Co(II) complexes (1 and 2) show an easy plane anisotropy with large and positive D values and negligible rhombicity. The Ni(II) complex (5) has uniaxial magnetic anisotropy with a negative D value. Fe(III) complexes (3 and 4) have small zero-field splitting (ZFS) parameters. Theoretical modeling is used to rationalize the magnetic anisotropy in these systems and to identify the most important excited states that are responsible for the zero-field splitting. These excitations are a consequence of the electronic structure of the central metal ion in ideal pentagonal bipyramidal coordination.This is the authors' peer-reviewed version of the article: Darmanović Darinka, Shcherbakov Igor N., Duboc Carole, Spasojević Vojislav, Hanžel Darko, Anđelković Katarina, Radanović Dušanka, Turel Iztok, Milenković Milica R., Gruden Maja, Čobeljić Božidar, Zlatar Matija, "Combined Experimental and Theoretical Investigation of the Origin of Magnetic Anisotropy in Pentagonal Bipyramidal Isothiocyanato Co(II), Ni(II), and Fe(III) Complexes with Quaternary-Ammonium-Functionalized 2,6-Diacetylpyridine Bisacylhydrazone" 123, no. 51 (2019):31142-31155, [https://dx.doi.org/ 10.1021/acs.jpcc.9b08066 ]The published version: [http://cer.ihtm.bg.ac.rs/handle/123456789/3314]Supplementary data: [https://cer.ihtm.bg.ac.rs/handle/123456789/4438

Supplementary data for the article: Darmanović, D.; Shcherbakov, I. N.; Duboc, C.; Spasojević, V.; Hanžel, D.; Anđelković, K.; Radanović, D.; Turel, I.; Milenković, M.; Gruden, M.; et al. Combined Experimental and Theoretical Investigation of the Origin of Magnetic Anisotropy in Pentagonal Bipyramidal Isothiocyanato Co(II), Ni(II), and Fe(III) Complexes with Quaternary-Ammonium-Functionalized 2,6-Diacetylpyridine Bisacylhydrazone. Journal of Physical Chemistry C 2019, 123 (51), 31142–31155. https://doi.org/10.1021/acs.jpcc.9b08066

Supplementary material for: [https://doi.org/10.1021/acs.jpcc.9b08066]Related to published version: [http://cherry.chem.bg.ac.rs/handle/123456789/3855]Related to accepted version: [http://cherry.chem.bg.ac.rs/handle/123456789/3856

H2O2 Oxidation by Fe-III-OOH Intermediates and Its Effect on Catalytic Efficiency

The oxidation of the C-H and C=C bonds of hydrocarbons with H2O2 catalyzed by non-heme iron complexes with pentadentate ligands is widely accepted as involving a reactive Fe-IV=O species such as [(N4Py)Fe-IV=O](2+) formed by homolytic cleavage of the O-O bond of an Fe-III-OOH intermediate (where N4Py is 1,1-bis(pyridin-2-yl)-N,N-bis(pyridin-2-ylmethyl)methanamine). We show here that at low H2O2 concentrations the Fe-IV=O species formed is detectable in methanol. Furthermore, we show that the decomposition of H2O2 to water and O-2 is an important competing pathway that limits efficiency in the terminal oxidant and indeed dominates reactivity except where only sub-/near-stoichiometric amounts of H2O2 are present. Although independently prepared [(N4Py)Fe-IV=O](2+) oxidizes stoichiometric H2O2 rapidly, the rate of formation of Fe-IV=O from the Fe-III-OOH intermediate is too low to account for the rate of H2O2 decomposition observed under catalytic conditions. Indeed, with excess H2O2, disproportionation to O-2 and H2O is due to reaction with the Fe-III-OOH intermediate and thereby prevents formation of the Fe-IV=O species. These data rationalize that the activity of these catalysts with respect to hydrocarbon/alkene oxidation is maximized by maintaining sub-/near-stoichiometric steady-state concentrations of H2O2, which ensure that the rate of the H2O2 oxidation by the Fe-III-OOH intermediate is less than the rate of the O-O bond homolysis and the subsequent reaction of the Fe-IV=O species with a substrate

Supplementary material for the article: Zlatar, M.; Gruden, M.; Vassilyeva, O. Y.; Buvaylo, E. A.; Ponomarev, A. N.; Zvyagin, S. A.; Wosnitza, J.; Krzystek, J.; Garcia-Fernandez, P.; Duboc, C. Origin of the Zero-Field Splitting in Mononuclear Octahedral MnIV Complexes: A Combined Experimental and Theoretical Investigation. Inorganic Chemistry 2016, 55 (3), 1192–1201. https://doi.org/10.1021/acs.inorgchem.5b02368

Supplementary material for: [https://doi.org/10.1021/acs.inorgchem.5b02368]Related to published version: [http://cherry.chem.bg.ac.rs/handle/123456789/2038