Results 21 to 30 of about 7,310,138 (312)

C—C bond formation in the intramolecular Diels-Alder reaction of triene amides

open access: yesHeliyon, 2018
The mechanism nature of the intramolecular Diels–Alder reaction has been performed; and thus, the changes of C—C bond forming/breaking along IRC are characterized in this study.
Abdelilah Benallou   +2 more
doaj   +1 more source

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

Click chemistry with DNA [PDF]

open access: yes, 2010
The advent of click chemistry has led to an influx of new ideas in the nucleic acids field. The copper catalysed alkyne–azide cycloaddition (CuAAC) reaction is the method of choice for DNA click chemistry due to its remarkable efficiency.
El-Sagheer, Afaf H., Brown, Tom
core   +1 more source

60th Symposium on Theoretical Chemistry: Next-Generation Theoretical Chemistry [PDF]

open access: yes
This year’s Symposium for Theoretical Chemistry (STC 2024) took place in Braunschweig at the beginning of September 2024. The Symposium for Theoretical Chemistry is the most important international conference for theoretical chemistry in the German ...
Jacob, Christoph R.   +4 more
core   +1 more source

Specioside (SS) & verminoside (VS) (Iridoid glycosides): isolation, characterization and comparable quantum chemical studies using density functional theory (DFT)

open access: yesHeliyon, 2019
Two biologically important molecules specioside (SS) and verminoside (VS) have been isolated from the ethanolic extract of stem bark of Kigelia pinnata.
Monika Saini   +5 more
doaj   +1 more source

Two modified Zagreb indices for random structures

open access: yesMain Group Metal Chemistry, 2021
Random structure plays an important role in the composition of compounds, and topological index is an important index to measure indirectly the properties of compounds.
Li Siman, Shi Li, Gao Wei
doaj   +1 more source

Department of Chemistry Newsletter (1990) [PDF]

open access: yes, 1990
The newsletter of the Department of Chemistry, published once or twice a year, highlights people, events, and facilities. Content includes brief articles on new faculty hires, faculty and staff retirements, obituaries, major facilities and equipment ...
Department of Chemistry
core   +1 more source

Electronic properties and 4f→ 5d transitions in Ce-doped Lu2SiO5: a theoretical investigation [PDF]

open access: yes, 2012
This is an electronic version of an article published in Journal of Materials Chemistry. Ning, L., Lin, L., Li, L., Wu, C., Duan, C., Zhang, Y. and Luis Seijo. "Electronic properties and 4f 5d transitions in Ce-doped Lu2SiO5: a theoretical investigation".
Wu, Changbao   +6 more
core   +1 more source

Theoretical and Experimental Spectroscopic Analysis of Cyano-Substituted Styrylpyridine Compounds

open access: yes, 2013
A combined theoretical and experimental study on the structure, infrared, UV-Vis and 1H NMR data of trans-2-(m-cyanostyryl)pyridine, trans-2-[3-methyl-(m-cyanostyryl)]pyridine and trans-4-(m-cyanostyryl)pyridine is presented.
Maria Castro   +6 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

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