Results 1 to 10 of about 46,449 (257)

The Nitrilimine–Alkene Cycloaddition Regioselectivity Rationalized by Density Functional Theory Reactivity Indices [PDF]

open access: yesMolecules, 2017
Conventional frontier molecular orbital theory is not able to satisfactorily explain the regioselectivity outcome of the nitrilimine–alkene cycloaddition.
Giorgio Molteni, Alessandro Ponti
doaj   +4 more sources

Transcranial Doppler Based Cerebrovascular Reactivity Indices in Adult Traumatic Brain Injury: A Scoping Review of Associations With Patient Oriented Outcomes [PDF]

open access: yesFrontiers in Pharmacology, 2021
Background: Disruption in cerebrovascular reactivity following traumatic brain injury (TBI) is a known phenomenon that may hold prognostic value and clinical relevance.
Alwyn Gomez   +9 more
doaj   +2 more sources

Practical Considerations for Continuous Time-Domain Cerebrovascular Reactivity Indices in Traumatic Brain Injury: Do Scaling Errors in Parent Signals Matter? [PDF]

open access: yesFrontiers in Neurology, 2022
Literature pertaining to traumatic brain injury care involves the mediation and control of secondary brain injury mechanisms, chief among these is cerebral autoregulation.
Logan Froese   +9 more
doaj   +2 more sources

Indices of the fullerenes reactivity

open access: yesARKIVOC, 2011
The review summarizes articles devoted to studies of fullerenes reactivity by quantum-chemical methods using of diverse reactivity indices, e.g. heats of reactions, activation energies, spin densities, pyramidality angles. Among them we can elect both approaches that have been used for the other organic compounds earlier (e.g., comparative bond orders ...
Denis Sh. Sabirov   +2 more
doaj   +3 more sources

Applications of the Conceptual Density Functional Theory Indices to Organic Chemistry Reactivity

open access: yesMolecules, 2016
Theoretical reactivity indices based on the conceptual Density Functional Theory (DFT) have become a powerful tool for the semiquantitative study of organic reactivity. A large number of reactivity indices have been proposed in the literature.
Luis R. Domingo   +2 more
doaj   +3 more sources

Quantum chemical analysis of reactivity of several chromenopyrazoles [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Серия Химия. Биология. Экология, 2022
The article presents the results of quantum chemical calculation of reactivity indices of nine substituted chromenopyrazoles that can be potentially used as ligands for light emitting complex compounds.
Menyailo, Ilya E.   +4 more
doaj   +1 more source

A theoretical study on the regio- and stereoselectivity of [3+2] cycloaddition of 2-(trifluoroacetyl)vinyl ethyl ether to 2-arylidene-5-oxopyrazolidin-2-ium-1-ides [PDF]

open access: yesJournal of the Serbian Chemical Society, 2018
[3+2] Cycloaddition reactions of 2-(trifluoroacetyl)vinyl ethyl ether (1) to substituted and unsubstitued 2-arylidene-5-oxopyrazolidin-2-ium-1-ides (2a–e) were studied using density functional theory (DFT) methods at the cc-pVDZ level.
Haghdadi Mina, Nab Nasim
doaj   +1 more source

Theoretical study on the Diels-Alder reaction of bromo-substituted 2H-pyrane-2-ones and some substituent vinyls [PDF]

open access: yesJournal of the Serbian Chemical Society, 2015
A DFT study of the reactivity, regio- and stereoselectivity of Diels-Alder reaction between 3-bromo, 5-bromo, and 3,5-dibromo-2(H)-pyran-2-ones and some weakly activated and unactivated alkenes has been carried out using density functional ...
Haghdadi Mina, Amani Hamed, Nab Nasim
doaj   +1 more source

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