Results 21 to 30 of about 8,581,160 (147)

A molecular Debye-Hückel theory and its applications to electrolyte solutions [PDF]

open access: yes, 2011
In this report, a molecular Debye-Hückel theory for ionic fluids is developed. Starting from the macroscopic Maxwell equations for bulk systems, the dispersion relation leads to a generalized Debye-Hückel theory which is related to the dressed ion theory
Xiao, Tiejun   +3 more
core   +1 more source

Correlation between Fourier series expansion and Hückel orbital theory

open access: yes, 2013
The Fourier series can be used to describe periodic phenomena such as the one-dimensional crystal wave function. By the trigonometric treatements in Hückel theory it is shown that Hückel theory is a special case of Fourier series theory.
Yue Liu   +5 more
core   +1 more source

Ground state spin of some molecules with unusual hückel molecular orbital degeneracy

open access: yes, 1991
Prediction of the ground state spin of a special class of non-alternant, non-Kekulé molecules, using a new rule, supported by semi-empirical AMI/CI calculations is found to contradict Hückel molecular orbital result.
Radhakrishnan, T. P., T.P. Radhakrishnan
core   +1 more source

Electronic Structure Calculations at Macroscopic Scales [PDF]

open access: yes, 2007
Electronic structure calculations, especially those using density-functional theory have provided many insights into various materials properties in the recent decade.
Gavini, Vikram
core   +1 more source

The Hückel total p-electron energy puzzle [PDF]

open access: yesJournal of the Serbian Chemical Society, 2006
In spite of being based on drastic simplifications, the Hückel molecular orbital (HMO) quantum-mechanical model provides a reasonably good description of the properties of p-electrons in conjugated molecules.
MILJENKO PERIC   +2 more
doaj  

Molecular Design Strategies for High‐Voltage Organic Cathodes

open access: yesAdvanced Energy Materials, EarlyView.
This work proposes molecular engineering strategies for high‐voltage organic cathode materials for Li‐ion batteries: (1) increase Li‐O coordination number (CN), (2) achieve a greater increase in aromaticity upon reduction (∆Aromaticity), and (3) add an electron‐withdrawing group (EWG), through a combined experimental and computational study on reported
Sungil Hong   +8 more
wiley   +1 more source

Molecular orbital theory in cavity QED environments [PDF]

open access: yes, 2022
Coupling between molecules and vacuum photon fields inside an optical cavity has proven to be an effective way to engineer molecular properties, in particular reactivity.
Koch, Henrik   +3 more
core   +1 more source

Introductory molecular orbital theory: An honors general chemistry computational lab as implemented using three-dimensional modeling software

open access: yes, 2012
In this study, a computational molecular orbital theory experiment was implemented in a first-semester honors general chemistry course. Students used the GAMESS (General Atomic and Molecular Electronic Structure System) quantum mechanical software (as ...
Parrill, Abby L.   +2 more
core   +1 more source

Cycloazulenylene

open access: yesAngewandte Chemie International Edition, EarlyView.
A strained macrocycle consisting solely of azulene subunits, named [6]cycloparaazulenylene ([6]CPA), is presented. The macrocycle exhibits a notably narrow HOMO–LUMO gap for a pristine azulene species, strain‐induced red‐shifted absorption, and an unusual tubular packing motif elucidated via single‐crystal XRD.
Clara Douglas   +8 more
wiley   +1 more source

Molecular orbital theory: an introductory lecture note and reprint volume [PDF]

open access: yes, 1965
These notes are based on lectures on molecular orbital theory that we have presented at the University of Copenhagen and Columbia University. They were designed primarily for advanced-undergraduate and first-year graduate students as an introduction to ...
Ballhausen, Carl A., Gray, Harry B.
core  

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