Dalton Transactions

doi: 10.1039/d4dt90121epmid: N/A

doi: 10.1039/d4dt90122cpmid: N/A

doi: 10.1039/d4dt90123apmid: N/A

doi: 10.1039/d4dt90110jpmid: 38939953

We would like to take this opportunity to thank all of Dalton Transactions’ reviewers for helping to preserve quality and integrity in chemical science literature. We would also like to highlight the Outstanding Reviewers for Dalton Transactions in 2023.

Aggarwal, Simran; Awasthi, Satish Kumar

doi: 10.1039/d4dt01127apmid: 38916403

Owing to unique structural features, triazine-based covalent organic polymers (COPs) have attracted significant attention and emerged as novel catalysts or support materials for an array of applications. Typically formed by reacting triazine-based monomers or the in situ creation of triazine rings from nitrile monomers, these COPs possess 2D/3D meso/microporous structures held together via strong covalent linkages. The quest for efficient, stable and recyclable catalytic systems globally necessitates the need for a well-structured and comprehensive review summarizing the synthetic methodologies and applications of triazine-based COPs. This review explores the various synthetic routes and applications of these COPs in photocatalysis, heterogeneous catalysis, electrocatalysis, adsorption and sensing. By exploring the latest advancements and future directions, this review offers valuable insights into the synthesis and applications of triazine-based COPs.

White, Navar M.; Waldie, Kate M.

doi: 10.1039/d3dt04304epmid: 38896286

The electrocatalytic oxidation of carbon-based liquid fuels, such as formic acid and alcohols, has important applications for our renewable energy transition. Molecular electrocatalysts based on transition metal complexes provide the opportunity to explore the interplay between precise catalyst design and electrocatalytic activity. Recent advances have seen the development of first-row transition metal electrocatalysts for these transformations that operate via hydride transfer between the substrate and catalyst. In this Frontier article, we present the key contributions to this field and discuss the proposed mechanisms for each case. These studies also reveal the remaining challenges for formate and alcohol oxidation with first-row transition metal systems, for which we provide perspectives on future directions for next-generation electrocatalyst design.

Xiang, Libo; Matler, Alexander; Tan, Leibo; Ye, Qing

doi: 10.1039/d4dt01615gpmid: 38946218

In this contribution, we present the reactions of the o-carborane-based analogue of 9-bromo-9-borafluorene, a Lewis superacid, with diverse Lewis bases. A range of acid–base adducts, along with an intramolecular C–H activation product, were generated. All new compounds have been fully characterized.

Khrizanforova, Vera V.; Fayzullin, Robert R.; Morozov, Vladimir I.; Budnikova, Yulia H.

doi: 10.1039/d4dt01039fpmid: 38940817

Herein, we report the record-breaking seven-electron reduction of di-iso-propylphenyl-bis-iminoacenaphthene (dpp-bian) involving protons under chemical and electrochemical reduction conditions. Using the dpp-bian-H2 compound as a starting reagent, its mono- and trisodium salts were obtained. A voltammetric study showed that the trinuclear sodium salt can accept an additional seventh electron upon electrochemical reduction.

Kobayashi, Kana; Suzuki, Michiyuki; Sato, Tetsu; Horii, Yoji; Yoshida, Takefumi; Breedlove, Brian. K.; Yamashita, Masahiro; Katoh, Keiichi

doi: 10.1039/d4dt00436apmid: 38651377

Switchable spin dynamic properties in single-molecule magnets (SMMs) via an applied stimulus have applications in single-molecule devices. Many SMMs containing heavy lanthanoid ions with strong uniaxial magnetic anisotropy have been reported to exhibit SMM characteristics in the absence of an external magnetic field. On the other hand, SMMs containing light lanthanoid cerium(iii) (Ce3+) ions exhibit field-induced slow magnetic relaxation. We investigated the chemical conversion of a diamagnetic Ce4+ ion (4f0) to a paramagnetic Ce3+ ion (4f1) in Ce-phthalocyaninato double-decker complexes (TBA+[Ce(obPc)2]− (1) and TBA+[Ce(Pc)2]− (2)) which exhibit field-induced SMM behaviour due to a 4f1 system. The phthalocyaninato ligands with electron-donating substituents (obPc2− = 2,3,9,10,16,17,23,24-octabutoxyphthalocyaninato) in 1 have a significant effect on the valence state of the Ce ion, which is reflected in its magnetic properties due to the mixed valence state of the Ce ion. Given that Ce double-decker complexes with π-conjugated ligands undergo intramolecular electron transfer (IET) to the Ce ion mixed valence state, characterised by a mixture of 4f0 and 4f1 configurations, we examined the dynamic disorder inherent in IET influencing magnetic relaxation.

Nowicka, Daria; Marcinkowski, Dawid; Vadra, Nahir; Szymańska, Martyna; Kubicki, Maciej; Consiglio, Giuseppe; Drożdż, Wojciech; Stefankiewicz, Artur R.; Patroniak, Violetta; Fik-Jaskółka, Marta; Gorczyński, Adam