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Aromaticity Tuning in Biaryl Monophosphines and Their Derivatives [PDF]

open access: yesMolecules
Aromaticity tuning of biaryl monophosphines can significantly impact their catalytic performance. Biaryl monophosphines constitute a crucial class of compounds due to their potential as ligand precursors in asymmetric Pd-catalyzed cross-coupling and some
Barbara Miroslaw   +7 more
doaj   +2 more sources

Singlet/Triplet State Anti/Aromaticity of CyclopentadienylCation: Sensitivity to Substituent Effect

open access: yesChemistry, 2021
It is well known that singlet state aromaticity is quite insensitive to substituent effects, in the case of monosubstitution. In this work, we use density functional theory (DFT) calculations to examine the sensitivity of triplet state aromaticity to ...
Milovan Stojanović   +2 more
doaj   +1 more source

The relationships between direct substituents, aromaticity and kinetic stability of pentazole ring

open access: yesFirePhysChem, 2023
The two directly substituted pentazoles, N5NH2 and N5COOH, were designed to theoretically study the relationships between substituents, aromaticity and kinetic stability thereof.
Chunhai Yang   +12 more
doaj   +1 more source

Occurrence of Double Bond in π-Aromatic Rings: An Easy Way to Design Doubly Aromatic Carbon-Metal Structures

open access: yesMolecules, 2021
A chemical bonding of several metallabenzenes and metallabenzynes was studied via an adaptive natural density partitioning (AdNDP) algorithm and the induced magnetic field analysis.
Nikolay V. Tkachenko   +2 more
doaj   +1 more source

A study on the aromaticity and magnetic properties of N-confused porphyrins [PDF]

open access: yesRoyal Society Open Science, 2020
In this paper, topological resonance energy (TRE) methods were used to describe the global aromaticity of nitrogen confused porphyrin (NCP) isomers. The TRE results show that all NCP isomers exhibit lower aromaticity than the normal porphyrins, and their
Maimaitijiang Tuersun, Ablikim Kerim
doaj   +1 more source

The application of aromaticity and antiaromaticity to reaction mechanisms

open access: yesFundamental Research, 2023
Aromaticity, in general, can promote a given reaction by stabilizing a transition state or a product via a mobility of π electrons in a cyclic structure.
Qin Zhu   +7 more
doaj   +1 more source

Structure and Stability of Aromatic Nitrogen Heterocycles Used in the Field of Energetic Materials

open access: yesMolecules, 2020
Understanding the stabilization of nitrogen heterocycles is critical in the field of energetic materials and calls for innovative knowledge of nitrogen aromatics.
He-Hou Zong   +4 more
doaj   +1 more source

Melting behavior of aliphatic and aromatic diamides [PDF]

open access: yes, 1977
Copolyamides of nylon-4,6 and nylon-4,T were prepared by a two-step method: (1) a prepolymerization in an autoclave (40 min at 210°C) and (2) a postcondensation in the solid state (4 h, 260°C). On these materials was studied the melting behavior with DSC,
Gaymans, R.J., Harkema, S.
core   +8 more sources

Aromaticity of Heterocirculenes

open access: yesChemistry, 2021
This review summarizes the results on the aromaticity of a series of synthesized and hypothetical neutral heterocirculene molecules and their double charged ions.
Nataliya N. Karaush-Karmazin   +2 more
doaj   +1 more source

Conversion of biochar into sulfonate-bearing solid acids used for the hydrolysis of tylosin: the effect of aromaticity and degree of condensation

open access: yesBiochar, 2023
In the last few decades, sulfonated carbon materials have garnered significant attention as Brønsted solid acid catalysts. The sulfonation process and catalytic activity of sulfonated biochar can be influenced by the aromaticity and degree of ...
Qianqian Xie   +5 more
doaj   +1 more source

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