Relativistic DFT calculations of magnetic moments of pristine and thiolated Mn@Aux (x = 6, 12)

2014 ◽  
Vol 16 (39) ◽  
pp. 21506-21512 ◽  
Author(s):  
G. Raggi ◽  
J. R. Soto
Keyword(s):  
Dft Calculations ◽  
Magnetic Moments ◽  
Relativistic Dft

In this work we present the results of relativistic DFT calculations of magnetic moments for manganese inserted into a gold ring (Mn@Au6) or a cage-like structure (Mn@Au12) both pristine and n-thiolated.

Accurate prediction of 195Pt NMR chemical shifts for a series of Pt(ii) and Pt(iv) antitumor agents by a non-relativistic DFT computational protocol

2014 ◽  
Vol 43 (14) ◽  
pp. 5409-5426 ◽  
Author(s):  
Athanassios C. Tsipis ◽  
Ioannis N. Karapetsas
Keyword(s):  
Dft Calculations ◽  
Anticancer Agents ◽  
Antitumor Agents ◽  
Chemical Shifts ◽  
Accurate Prediction ◽  
Nmr Chemical Shifts ◽  
Relativistic Dft ◽  
Square Planar ◽  
Wide Range ◽  
Computational Protocol

Exhaustive benchmark DFT calculations reveal that the non-relativistic GIAO-PBE0/SARC-ZORA(Pt)∪6-31+G(d)(E) computational protocol predicts accurate 195Pt NMR chemical shifts for a wide range of square planar Pt(ii) and octahedral Pt(iv) anticancer agents.

31P and 195Pt solid-state NMR and DFT studies on platinum(i) and platinum(ii) complexes

2018 ◽  
Vol 47 (27) ◽  
pp. 8884-8891 ◽  
Author(s):  
Stefano Todisco ◽  
Giacomo Saielli ◽  
Vito Gallo ◽  
Mario Latronico ◽  
Antonino Rizzuti ◽  
...  
Keyword(s):  
Solid State ◽  
Dft Calculations ◽  
Solid State Nmr ◽  
Nmr Spectra ◽  
Pulse Sequence ◽  
Spin Orbit ◽  
Dft Studies ◽  
Relativistic Dft

31P and 195Pt solid state NMR spectra on anti-[(PHCy)ClPt(μ-PCy2)2Pt(PHCy)Cl] (3) and [(PHCy2)Pt(μ-PCy2)(κ2P,O-μ-POCy2)Pt(PHCy2)] (Pt–Pt) (4) were recorded under CP/MAS conditions (31P) or with the CP/CPMG pulse sequence (195Pt) and compared to data obtained by relativistic DFT calculations of 31P and 195Pt CS tensors and isotropic shielding at the ZORA Spin Orbit level.

scholarly journals Computation provides chemical insight into the diverse hydride NMR chemical shifts of [Ru(NHC)4(L)H]0/+ species (NHC = N-heterocyclic carbene; L = vacant, H2, N2, CO, MeCN, O2, P4, SO2, H−, F− and Cl−) and their [Ru(R2PCH2CH2PR2)2(L)H]+ congeners

2017 ◽  
Vol 46 (9) ◽  
pp. 2861-2873 ◽  
Author(s):  
L. Jonas L. Häller ◽  
Elena Mas-Marzá ◽  
Mateusz K. Cybulski ◽  
Rajashekharayya A. Sanguramath ◽  
Stuart A. Macgregor ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Chemical Shifts ◽  
Nmr Chemical Shifts ◽  
Relativistic Dft ◽  
Ru Complexes ◽  
Insight Into

Relativistic DFT calculations rationalise hydride NMR chemical shifts in a range of Ru complexes.

Anion Recognition by Organometallic Calixarenes: Analysis from Relativistic DFT Calculations

2018 ◽  
Vol 37 (13) ◽  
pp. 2167-2176 ◽  
Author(s):  
Alexandre O. Ortolan ◽  
Ina Øestrøm ◽  
Giovanni F. Caramori ◽  
Renato L. T. Parreira ◽  
Alvaro Muñoz-Castro ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Anion Recognition ◽  
Relativistic Dft

scholarly journals Atomic, electronic and magnetic structure of an oxygen interstitial in neutron-irradiated Al2O3 single crystals

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
V. Seeman ◽  
A. Lushchik ◽  
E. Shablonin ◽  
G. Prieditis ◽  
D. Gryaznov ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Single Crystals ◽  
Density Functional ◽  
Magnetic Moments ◽  
Atomic Charges ◽  
Interstitial Oxygen ◽  
Absorption Bands ◽  
Magnetic Field Rotation ◽  
Formal Charge ◽  
Radiation Induced

Abstract A single radiation-induced superoxide ion $$O_{2}^{ - }$$ O 2 - has been observed for the first time in metal oxides. This structural defect has been revealed in fast-neutron-irradiated (6.9×1018n/cm2) corundum (α-Al2O3) single crystals using the EPR method. Based on the angular dependence of the EPR lines at the magnetic field rotation in different planes and the determined g tensor components, it is shown that this hole-type $$O_{2}^{ - }$$ O 2 - center (i) incorporates one regular and one interstitial oxygen atoms being stabilized by a trapped hole (S = 1/2), (ii) occupies one oxygen site in the (0001) plane being oriented along the a axis, and (iii) does not contain any other imperfection/defect in its immediate vicinity. The thermal stepwise annealing (observed via the EPR signal and corresponding optical absorption bands) of the $$O_{2}^{ - }$$ O 2 - centers, caused by their destruction with release of a mobile ion (tentatively the oxygen ion with the formal charge −1), occurs at 500–750 K, simultaneously with the partial decay of single F-type centers (mostly with the EPR-active F+ centers). The obtained experimental results are in line with the superoxide defect configurations obtained via density functional theory (DFT) calculations employing the hybrid B3PW exchange-correlation functional. In particular, the DFT calculations confirm the $$O_{2}^{ - }$$ O 2 - center spin S = 1/2, its orientation along the a axis. The $$O_{2}^{ - }$$ O 2 - center is characterized by a short O–O bond length of 1.34 Å and different atomic charges and magnetic moments of the two oxygens. We emphasize the important role of atomic charges and magnetic moments analysis in order to identify the ground state configuration.

Nature of cucurbituril–halogen encapsulation. Structural and interaction energy consideration in the X2@CB[n] (X = Cl, Br, I, n = 6, 7, 8) from relativistic DFT calculations

2018 ◽  
Vol 20 (46) ◽  
pp. 29325-29332 ◽  
Author(s):  
Carolina Olea Ulloa ◽  
Miguel Ponce-Vargas ◽  
Alvaro Muñoz-Castro
Keyword(s):  
Dft Calculations ◽  
Interaction Energy ◽  
Relativistic Dft ◽  
Guest Species ◽  
Energy Consideration

The versatility in the formation of host–guest species between the cucurbituril host and the dihalogen guest is studied via DFT calculations.

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