Topic
Dication
About: Dication is a research topic. Over the lifetime, 3469 publications have been published within this topic receiving 60957 citations. The topic is also known as: divalent cation & divalent positive ion.
Papers published on a yearly basis
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Papers
TL;DR: A comprehensive review of the synthetic applications of photocatalyzed d-HAT can be found in this article, where the authors provide a comprehensive overview of the main applications of PCHAT.
Abstract: Direct photocatalyzed hydrogen atom transfer (d-HAT) can be considered a method of choice for the elaboration of aliphatic C-H bonds. In this manifold, a photocatalyst (PCHAT) exploits the energy of a photon to trigger the homolytic cleavage of such bonds in organic compounds. Selective C-H bond elaboration may be achieved by a judicious choice of the hydrogen abstractor (key parameters are the electronic character and the molecular structure), as well as reaction additives. Different are the classes of PCsHAT available, including aromatic ketones, xanthene dyes (Eosin Y), polyoxometalates, uranyl salts, a metal-oxo porphyrin and a tris(amino)cyclopropenium radical dication. The processes (mainly C-C bond formation) are in most cases carried out under mild conditions with the help of visible light. The aim of this review is to offer a comprehensive survey of the synthetic applications of photocatalyzed d-HAT.
722 citations
TL;DR: Electrochemical properties and reactivities of the two mediators 2,2'-azinobis-(3-ethylbenzthiazoline-6-sulfonate) (ABTS) and 1-hydroxybenzotriazole (HBT) were studied and their intermediates responsible for lignin oxidation were characterized.
491 citations
325 citations
TL;DR: It is shown that pyridine-2,6-diimine ligands are noninnocent ligands that can be coordinated to transition metal ions as neutral L0 or, alternatively, as monoanionic radical (L1)1-.
Abstract: A series of mononuclear, octahedral first-row transition metal ion complexes mer-[MIIL02](PF6)2 containing the tridentate neutral ligand 2,6-bis[1-(4-methoxyphenylimino)ethyl]pyridine (L0) and a MnII, FeII, CoII, NiII, CuII, or ZnII ion have been synthesized and characterized by X-ray crystallography. Cyclic voltammetry and controlled potential coulometry show that each dication (except those of CuII and ZnII) can be reversibly one-electron-oxidized, yielding the respective trications [MIIIL02]3+, and in addition, they can be reversibly reduced to the corresponding monocations [ML2]+ and the neutral species [ML2]0 by two successive one-electron processes. [MnL2]PF6 and [CoL2]PF6 have been isolated and characterized by X-ray crystallography; their electronic structures are described as [MnIIIL12]PF6 and [CoIL02]PF6 where (L1)1- represents the one-electron-reduced radical form of L0. The electronic structures of the tri-, di-, and monocations and of the neutral species have been elucidated in detail by a co...
324 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 22 |
| 2024 | 66 |
| 2023 | 84 |
| 2022 | 112 |
| 2021 | 90 |
| 2020 | 106 |