Results 21 to 30 of about 971,618 (331)

Contradictions in theoretical chemistry [PDF]

open access: yesNature, 1981
Chemistry, Quantum Mechanics and Reductionism. By Hans Primas. Pp.451. ISBN 3-540-10696-0. (Springer-Verlag: 1981.) DM 68, $32.40.
openaire   +3 more sources

In memoriam two distinguished participants of the Bregenz Symmetries in Science Symposia: Marcos Moshinsky and Yurii Fedorovich Smirnov [PDF]

open access: yes, 2009
Some particular facets of the numerous works by Marcos Moshinsky and Yurii Fedorovich Smirnov are presented in these notes. The accent is put on some of the common interests of Yurii and Marcos in physics, theoretical chemistry, and mathematical physics.
Asherova R M   +46 more
core   +2 more sources

Deuterium chemistry in the primordial gas [PDF]

open access: yes, 2002
We review and update some aspects of deuterium chemistry in the post-recombination Universe with particular emphasis on the formation and destruction of HD. We examine in detail the available theoretical and experimental data for the leading reactions of
Abel   +60 more
core   +3 more sources

Computational Complexity in Electronic Structure [PDF]

open access: yes, 2012
In quantum chemistry, the price paid by all known efficient model chemistries is either the truncation of the Hilbert space or uncontrolled approximations.
Aaronson   +80 more
core   +3 more sources

Topological indices for random spider trees

open access: yesMain Group Metal Chemistry, 2023
In this study, we characterize the structure and some topological indices of a class of random spider trees (RSTs) such as degree-based Gini index, degree-based Hoover index, generalized Zagreb index, and other indices associated with these.
Sigarreta Saylé   +2 more
doaj   +1 more source

Identifying (BN)2-pyrene as a new class of singlet fission chromophores: significance of azaborine substitution [PDF]

open access: yes, 2018
Singlet fission converts one photoexcited singlet state to two triplet excited states and raises photoelectric conversion efficiency in photovoltaic devices.
Mellerup, Soren   +5 more
core   +1 more source

Influence of atomic bonds on the properties of the laxative drug sodium picosulphate

open access: yesHeliyon, 2016
In this work, the influence of the different S═O, S−O, N⋯H, O⋯H, Na⋯O bonds present in the structures of the powerful laxative drug, sodium picosulphate in gas and aqueous solution phases were studied combining the density functional theory (DFT ...
Davide Romani   +2 more
doaj   +1 more source

Supersymmetry and the Hartmann Potential of Theoretical Chemistry

open access: yes, 1996
The ring-shaped Hartmann potential $ V = \eta \sigma^{2} \epsilon_{0} \left( \frac{2 a_{0}}{r} - \frac{\eta a_{0}^{2}}{r^{2} sin^{2} \theta} \right) $ was introduced in quantum chemistry to describe ring-shaped molecules like benzene.
Blado, Gardo Garnet
core   +2 more sources

Predictive energetic tuning of C-Nucleophiles for the electrochemical capture of carbon dioxide

open access: yesiScience, 2022
Summary: This work maps the thermodynamics of electrochemically generated C-nucleophiles for reactive capture of CO2. We identify a linear relationship between the pKa, the reduction potential of a protonated nucleophile (Ered), and the nucleophile’s ...
Haley A. Petersen   +5 more
doaj  

Home - About - Disclaimer - Privacy