نتایج جستجو برای: td dft

تعداد نتایج: 26779  

Journal: :Journal of Chemical Theory and Computation 2016

Journal: :Chemical communications 2015
Hanna Jędrzejewska Marcin Kwit Agnieszka Szumna

Dynamic chirality of iminoresorcin[4]arenes that originates from regioselective and diastereoselective keto-enol tautomerisation was switched by non-covalent interactions with achiral molecules, as demonstrated by experimental electronic circular dichroism (ECD) spectra supported by TD DFT calculations.

Journal: :Structural Chemistry 2021

Derivatives of thiocarbohydrazone studied so far have shown great biological activity such as antioxidant, antimicrobial, and anticancer. Most these compounds are bis-substituted derivatives, while monothiocarbohydrazones much less investigated. Еighteen were synthesized subjected to physicochemical characterization in order facilitate the examination their potential application future studies....

Journal: :Physical Chemistry Chemical Physics 2021

Truncation of orbital subspaces in TD-DFT yields an accurate description RIXS spectra for soft X-ray K-edges.

Journal: :Molecules 2014
Eveline M Bezerra João R Bezerra-Neto Francisco A M Sales Ricardo P dos Santos Alice M C Martins Pedro de Lima-Neto Ewerton W S Caetano Eudenilson L Albuquerque Valder N Freire

UV-vis optical absorption spectra of the antitrypanocidal drug benznidazole solvated in water were measured for various concentrations. The spectra show a prominent peak around 3.80 eV, while deconvolution of the UV-vis optical absorption spectra revealed six bands centered at 3.60, 3.83, 4.15, 4.99, 5.60, and 5.76 eV. Benznidazole electronic transitions were obtained after density functional t...

Journal: :Molecular Simulation 2021

A combined molecular dynamics (MD) simulation and density functional theory (DFT) calculations were used to investigate the effect of acetonitrile (ACN) solution on absorption charge transfer in a D205 indoline dye at interface TiO2 nanoparticle. DFT carried out estimate equilibrium geometry small Ti30O62H4-anatase nanoparticle derive interaction parameters for bidentate binding TiO2. series co...

2003
Fernando Aguirre John Husband Christopher J. Thompson Kay L. Stringer Ricardo B. Metz

The resonance enhanced ~111! photodissociation spectra of the ~8,0! and ~9,0! bands of the P7/2←S system of FeO have been recorded. From a rotational analysis, the rotational parameters for the S ground state of FeO have been obtained for the first time. The rotational constant B050.502060.0004 cm 21 is derived, giving r051.64360.001 Å. Other molecular parameters determined for the S ground sta...

Journal: :Physical chemistry chemical physics : PCCP 2015
Pierre Guiglion Martijn A Zwijnenburg

We use a combination of Time-Dependent Density Functional Theory (TD-DFT) and approximate Coupled Cluster Theory (RI-CC2) to compare trends in the optical gap and fluorescence energies of ortho-, meta- and para-oligomers of phenylene. We find that RI-CC2 and TD-DFT calculations using three different commonly employed XC-potentials (B3LYP, BHLYP and CAM-B3LYP) generally give consistent predictio...

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