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Université de Fribourg

Computational analysis of tris(1,2-ethanediamine) cobalt(III) complex ion : calculation of the ⁵⁹Co shielding tensor using LF-DFT

Senn, Florian ; Zlatar, Matija ; Gruden-Pavlovic, Maja ; Daul, Claude

In: Monatshefte für Chemie - Chemical Monthly : an International Journal of Chemistry, 2011, vol. 142, no. 6, p. 593-597

The ligand-field density functional theory (LF-DFT) approach is employed for calculations of the ⁵⁹Co nuclear magnetic resonance (NMR) shielding tensor of all four diastereoisomers (λλλ, λλδ, λδδ, and δδδ) of tris(1,2-ethanediamine) cobalt(III) complex ion, [Co(en)₃]³⁺. The obtained values split into two groups according to the point group of the diastereoisomers. The...

Université de Fribourg

A density functional theory study of the Au₇Hn (n = 1–10) clusters

Zhang, Meng ; He, Li-Ming ; Zhao, Li-Xia ; Feng, Xiao-Juan ; Cao, Wei ; Luo, You-Hua

In: Journal of Molecular Structure: THEOCHEM, 2009, vol. 911, no. 1-3, p. 65-69

The geometries, electronic, and magnetic properties of the Au₇Hn (n = 1–10) clusters have been systematically investigated by using relativistic all-electron density functional theory with generalized gradient approximation. It is found that the Au₇ on the whole retains its triangle structure after hydrogen atoms adsorption and adsorbing hydrogen atoms can...

Université de Fribourg

Insensitivity of the striped charge orders in ${\mathrm{IrTe}}_{2}$ to alkali surface doping implies their structural origin

Rumo, Maxime ; Pulkkinen, Aki ; Salzmann, Björn ; Kremer, Geoffroy ; Hildebrand, Baptiste ; Ma, Keyan ; von Rohr, Fabian ; Nicholson, Christopher W. ; Jaouen, Thomas ; Monney, Claude

In: Physical Review Materials, 2021, vol. 5, no. 7, p. 074002

We present a combined angle-resolved photoemission spectroscopy and low-energy electron diffraction (LEED) study of the prominent transition metal dichalcogenide IrTe2 upon potassium (K) deposition on its surface. Pristine IrTe2 undergoes a series of charge-ordered phase transitions below room temperature that are characterized by the formation of stripes of Ir dimers of different...

Université de Fribourg

Kinetics, mechanism, and DFT calculations of thermal degradation of a Zn(II) complex with N-benzyloxycarbonylglycinato ligands

Ristović, Maja Šumar ; Pavlović, Maja Gruden ; Zlatar, Matija ; Blagojević, Vladimir ; Anđelković, Katarina ; Poleti, Dejan ; Minić, Dragica M.

In: Monatshefte für Chemie - Chemical Monthly An International Journal of Chemistry, 2012, p. -

A Zn(II) complex with N-benzyloxycarbonylglycinato ligands was studied by non-isothermal methods, in particular Kissinger–Akahira–Sunose’s method, and further analysis of these results was performed by Vyazovkin’s algorithm and an artificial compensation effect. Density functional theory calculations of thermodynamic quantities were performed, and results obtained by both methods...

Université de Fribourg

Spherical aromaticity of Jahn–Teller active fullerene ions

Perić, Marko ; Andjelković, Ljubica ; Zlatar, Matija ; Nikolić, Aleksandar S. ; Daul, Claude ; Gruden-Pavlović, Maja

In: Monatshefte für Chemie - Chemical Monthly, 2013, vol. 144, no. 6, p. 817–823

Density functional theory was applied to compute the nucleus-independent chemical shifts of fullerene (C₆₀), the fullerene ion C₆₀ ¹⁰⁺, and the Jahn–Teller active fullerene anion C₆₀ ⁻ and cation C₆₀ ⁺. Positioning a ³He nucleus inside the cage of each of these fullerene species facilitates investigations of the substantial differences among them, ³He NMR chemical...