Listar QFA_Articles por título
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Correlation in narrow nanorods: a variational potential–configuration interaction scheme
Institute of Physics (2009)Abstract. Full configuration interaction calculations of two electrons in narrow semiconductor nanorods are carried out employing different orbital basis sets. It is shown that the usual configurations built from ... -
Coulomb interaction signatures in self-assembled lateral quantum dot molecules
American Physical Society (2013)We use photoluminescence spectroscopy to investigate the ground state of single self-assembled InGaAs lateral quantum dot molecules. We apply a voltage along the growth direction that allows us to control the total ... -
Countercurrent chromatography: People and applications
Elsevier (2009)The scientific literature was scanned for the published research articles dealing with countercurrent chromatography (CCC) over the time period 1980-May 2008. The search returned 1638 articles that were analyzed focussing ... -
Coupled donors in quantum dots: quantum size and dielectric mismatch effects
American Physical Society (2009)Spatial and dielectric confinement modulations of the spontaneous emission rates, transition energies, and charge-density distributions of a singly ionized double donor system (D2+) in a spherical quantum dot are calculated ... -
Coupling of the Guanosine Glycosidic Bond Conformation and the Ribonucleotide Cleavage Reaction: Implications for Barnase Catalysis
Wiley-Blackwell (2008)To examine the possible relationship of guanine-dependent GpA conformations with ribonucleotide cleavage, two potential of mean force (PMF) calculations were performed in aqueous solution. In the first calculation, the ... -
Covalent Inhibition of the Human 20S Proteasome with Homobelactosin C Inquired by QM/MM Studies
MDPI (2022)20S proteasome is a main player in the protein degradation pathway in the cytosol, thus intervening in multiple pivotal cellular processes. Over the years the proteasome has emerged as a crucial target for the treatment ... -
[Cr(dmbipy)(ox)2]−: a new bis-oxalato building block for metal assembling. Crystal structures and magnetic properties of XPh4[Cr(dmbipy)(ox)2]·5H2O (X = P and As), {Ba(H2O)2[Cr(dmbipy)(ox)2]2}n·17/2nH2O and {Ag(H2O)[Cr(dmbipy)(ox)2]}n·3nH2O
Royal Society of Chemistry (2010)The synthesis, X-ray structure and variable-temperature magnetic study of new compounds of formula PPh4 [Cr(dmbipy)(ox)2 ]$5H2O (1), AsPh4 [Cr(dmbipy)(ox)2 ]$5H2O (2), {Ba(H2O)2[Cr(dmbipy)(ox)2]2}n$17/2nH2O (3) and ... -
Critical evaluation of anharmonicity and configurational averaging in QM/MM modelling of equilibrium isotope effects
Royal Society of Chemistry (2020)Anharmonic effects upon vibrational frequencies and isotopic partition function ratios are modelled computationally by means of quantum mechanics/molecular mechanics (QM/MM) methods for two systems. First, the methyl ... -
Crystal structure and theoretical study of IR and 1H and 13C NMR spectra of cordatin, a natural product with antiulcerogenic activity
Wiley (2008)Cordatin is a furan diterpenoid with a clerodane skeleton isolated from Croton palanostigma Klotzsch (Euphorbiaceae). This natural product shows significant antiulcerogenic activity, similar to cimetidine (Tagamet®), a ... -
Cubane-type Mo3FeS44+,5+ complexes containing outer diphosphane ligands: ligand substitution reactions, spectroscopic studies, and electronic structure
American Chemical Society (2012-10)A general protocol to access Mo3FeS44+ clusters selectively modified at the Fe coordination site is presented starting from the all-chlorine Mo3(FeCl)S4(dmpe)3Cl3 (1) [dmpe = 1,2-bis(dimethylphosphane-ethane)] cluster and ... -
Cuboidal Mo3S4 and Mo3NiS4 Complexes Bearing Dithiophosphates and Chiral Carboxylate Ligands: Synthesis, Crystal Structure and Fluxionality
Wiley (2011-02)New triangular Mo and W cluster complexes incorporating (S)-lactic acid (HLac), [Mo3S4(μ-Lac)(dtp)3(py)] (1) and [W3S4(μ-Lac)(dtp)3(py)] (2), were prepared [dtp = (EtO)2PS2]. Analogous synthetic procedures were adapted for ... -
Cuboidal Mo3S4 Clusters as a Platform for Exploring Catalysis: A Three-Center Sulfur Mechanism for Alkyne Semihydrogenation
American Chemical Society (2018-08-03)We report a trinuclear Mo3S4 diamino cluster that promotes the semihydrogenation of alkynes. Based on experimental and computational results, we propose an unprecedented mechanism in which only the three bridging sulfurs ... -
Curly arrows meet electron density transfers in chemical reaction mechanisms: from electron localization function (ELF) analysis to valence-shell electron-pair repulsion (VSEPR) inspired interpretation
Royal Society of Chemistry (2016)Probing the electron density transfers during a chemical reaction can provide important insights, making possible to understand and control chemical reactions. This aim has required extensions of the relationships between ... -
Curly arrows, electron flow, and reaction mechanisms from the perspective of the bonding evolution theory
Royal Society of Chemistry (2017)Despite the usefulness of curly arrows in chemistry, their relationship with real electron density flows is still imprecise, and even their direct connection to quantum chemistry is still controversial. The paradigmatic ... -
Cycloaddition of alkynes to diimino Mo3S4 cubane-type clusters: a combined experimental and theoretical approach
Royal Society of Chemistry (2016)A heterocyclic ligand 4,4′-di-tert-butyl-2,2′-bipyridine (dbbpy) has been coordinated to the Mo3S4 cluster unit affording the complex [Mo3S4Cl3(dbbpy)3]+ ([1]+) in a one-step ligand-exchange protocol from [Mo3S4(tu)8(H2O)]Cl4·4H2O ... -
Cytotoxic Effects Caused by Functionalized Carbon Nanotube in Murine Macrophages
Cell Physiol Biochem Press (2022-09-28)Background/Aims: The development of new nanomaterials has been growing in recent decades to bring benefits in several areas, especially carbon-based nanoparticles, which have unique physical-chemical properties and allow ... -
Deciphering the Curly Arrow Representation and Electron Flow for the 1,3-Dipolar Rearrangement between Acetonitrile Oxide and (1S,2R,4S)-2-Cyano-7-oxabicyclo[2.2.1]hept-5-en-2-yl Acetate Derivatives
American Chemical Society (2020-09-08)This study is focused on describing the molecular mechanism beyond the molecular picture provided by the evolution of molecular orbitals, valence bond structures along the reaction progress, or conceptual density functional ... -
Deciphering the molecular mechanism of intramolecular reactions from the perspective of bonding evolution theory
MDPI (2022-06-28)The molecular mechanisms of three intramolecular rearrangements (I, the rearrangement of allyloxycycloheptatriene to yield tricyclic ketones; II, the cycloaddition of a nitrone-alkene to render two tricyclic isoxazolidines; ... -
Degradation of seventeen contaminants of emerging concern in municipal wastewater effluents by sonochemical advanced oxidation processes
Elsevier (2019)The simultaneous degradation of seventeen emerging concern pollutants in effluent from the municipal wastewater treatment plant (MWTP) of Bogotá-Colombia was studied using high frequency ultrasound (375 kHz). The considered ...