scholarly journals [M16Ni24(CO)40]4–: Coinage Metal Tetrahedral Superatoms as Useful Building Blocks Related to Pyramidal Au20 Clusters (M = Cu, Ag, Au). Electronic and Bonding Properties from Relativistic DFT Calculations

2018 ◽  
Vol 122 (8) ◽  
pp. 4723-4730 ◽  
Author(s):  
Franck Gam ◽  
Ramiro Arratia-Pérez ◽  
Samia Kahlal ◽  
Jean-Yves Saillard ◽  
Alvaro Muñoz-Castro
Keyword(s):  
Dft Calculations ◽  
Building Blocks ◽  
Coinage Metal ◽  
Relativistic Dft ◽  
Bonding Properties

Evaluation of Ultrasmall Coinage Metal M13(dppe)6 M= Cu, Ag, Au Clusters. Bonding, Structural and Optical Properties from Relativistic DFT Calculations

2021 ◽  
Author(s):  
Peter L. Rodríguez-Kessler ◽  
Macarena Rojas-Poblete ◽  
Alvaro Muñoz-Castro
Keyword(s):  
Optical Properties ◽  
Dft Calculations ◽  
Structural And Optical Properties ◽  
Coinage Metal ◽  
Au Clusters ◽  
Relativistic Dft ◽  
Nanoscale Range

Ultrasmall ligand-protected clusters prototypical species to evaluate the variation at the bottom of the nanoscale range. Here we explored the ultrasmall gold-phosphine M13(dppe)6 cluster, as a prototypical framework to gain...

On the formation of spherical aromatic endohedral buckminsterfullerene. Evaluation of M@C60 (M = Cr, Mo, W) from relativistic DFT calculations

2020 ◽  
Vol 22 (25) ◽  
pp. 14268-14275
Author(s):  
Peter L. Rodríguez-Kessler ◽  
Nickolas D. Charistos ◽  
R. Bruce King ◽  
Alvaro Muñoz-Castro
Keyword(s):  
Electronic Structure ◽  
Dft Calculations ◽  
Neutral Species ◽  
Endohedral Fullerenes ◽  
Relativistic Dft ◽  
Bonding Properties

The resulting M@C60 endohedral fullerenes are 66-π electron neutral species exhibiting bonding properties and electronic structure mimicking the aromaticity and diamagnetic insulator behavior of alkali-C606− phases.

Coinage Metal Superatomic Cores: Insights into Their Intrinsic Stability and Optical Properties from Relativistic DFT Calculations

2017 ◽  
Vol 23 (47) ◽  
pp. 11330-11337 ◽  
Author(s):  
Franck Gam ◽  
Dayan Paez-Hernandez ◽  
Ramiro Arratia-Perez ◽  
C. W. Liu ◽  
Samia Kahlal ◽  
...  
Keyword(s):  
Optical Properties ◽  
Dft Calculations ◽  
Coinage Metal ◽  
Intrinsic Stability ◽  
Relativistic Dft

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.

scholarly journals Fluorinated azobenzenes as supramolecular halogen-bonding building blocks

2019 ◽  
Vol 15 ◽  
pp. 2013-2019 ◽  
Author(s):  
Esther Nieland ◽  
Oliver Weingart ◽  
Bernd M Schmidt
Keyword(s):  
Solid State ◽  
Dft Calculations ◽  
Visible Light ◽  
Half Life ◽  
Photophysical Properties ◽  
Bathochromic Shift ◽  
Halogen Bonding ◽  
Building Blocks ◽  
Partial Overlap

ortho-Fluoroazobenzenes are a remarkable example of bistable photoswitches, addressable by visible light. Symmetrical, highly fluorinated azobenzenes bearing an iodine substituent in para-position were shown to be suitable supramolecular building blocks both in solution and in the solid state in combination with neutral halogen bonding acceptors, such as lutidines. Therefore, we investigate the photochemistry of a series of azobenzene photoswitches. Upon introduction of iodoethynyl groups, the halogen bonding donor properties are significantly strengthened in solution. However, the bathochromic shift of the π→π* band leads to a partial overlap with the n→π* band, making it slightly more difficult to address. The introduction of iodine substituents is furthermore accompanied with a diminishing thermal half-life. A series of three azobenzenes with different halogen bonding donor properties are discussed in relation to their changing photophysical properties, rationalized by DFT calculations.

Sequential microhydration of cationic 5-hydroxyindole (5HI+): infrared photodissociation spectra of 5HI+–Wn clusters (W = H2O, n ≤ 4)

2018 ◽  
Vol 20 (5) ◽  
pp. 3092-3108 ◽  
Author(s):  
Johanna Klyne ◽  
Mitsuhiko Miyazaki ◽  
Masaaki Fujii ◽  
Otto Dopfer
Keyword(s):  
Hydrogen Bonding ◽  
Infrared Spectroscopy ◽  
Dft Calculations ◽  
Bonding Properties

The hydrogen-bonding properties of the acidic OH and NH groups of the 5-hydroxyindole cation are probed by infrared spectroscopy and DFT calculations of its microhydrated clusters.

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