An Isolable Phosphinogermylyne as a Synthon of One‐Coordinate GeI Radical DOI Open Access
Dongmin Wang, Haonan Chen,

Yuhao He

и другие.

Chinese Journal of Chemistry, Год журнала: 2023, Номер 42(7), С. 736 - 742

Опубликована: Ноя. 27, 2023

Comprehensive Summary Reduction of chlorogermylene M s Fluind t Bu ‐GeCl 1 with potassium graphite (KC 8 ) afforded putative germylyne radical ‐Ge 2 as confirmed by electron paramagnetic resonance (EPR) spectroscopy. However, it slowly decayed via C—H bond activation at the fluorenyl moiety to yield a bis(germylene) 3 room temperature. By using Lewis base stabilize unoccupied p orbital Ge I center, acyclic two‐coordinate radicals ‐Ge(I Me4 4 (I = 1,3,4,5‐tetramethyl‐imidazolin‐2‐ylidene), i Pr 5 1,3‐diisopropyl‐4,5‐dimethyl‐imidazolin‐2‐ylidene), ‐Ge(PMe 6 were isolated in crystalline forms. The unpaired — mainly resides 4p revealed EPR spectroscopic studies and theoretical calculations. Interestingly, facile ligand exchange PMe was observed afford , respectively. Moreover, phosphinogermylyne reacted PhEEPh (E S, Se), 4‐tetrabutylphenylacetylene (Ar'CCH), [CpMo(CO) ] n SnH furnish germylenes ‐GeEPh S 7 Se ), ‐GeCH=CHAr’ 9 complex ‐Ge≡Mo(CO) Cp 10 Ge(IV) compound ‐GeH Sn 11 reactivity demonstrate that can act synthon one‐coordinate attributing labile coordination trimethylphosphine.

Язык: Английский

Atomically Dispersed p‐Block Aluminum‐Based Catalysts for Oxygen Reduction Reaction DOI Open Access
Lei Zhao, Yunkun Dai, Yunlong Zhang

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(20)

Опубликована: Март 13, 2024

The main group metals are commonly perceived as catalytically inert in the context of oxygen reduction reactions (ORR) due to delocalized valence orbitals. Regulating local environment and structure metal center coordinated by nitrogen ligands (M-N

Язык: Английский

Процитировано

23
Synthesis of medium-sized benzo[b]azocines and benzo[b]azonines by photoinduced 8-/9-endo sulfonyl-cyclization DOI
Kai Sun, Dongyang Zhao, Quanxin Li

и другие.

Science China Chemistry, Год журнала: 2023, Номер 66(8), С. 2309 - 2316

Опубликована: Июль 24, 2023

Язык: Английский

Процитировано

41
Diradical B/N‐Doped Polycyclic Hydrocarbons DOI

Jiaxiang Guo,

Zeyi Li, Xinyu Tian

и другие.

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(9)

Опубликована: Янв. 5, 2023

Heterocyclic diradicaloids with atom-precise control over open-shell nature are promising materials for organic electronics and spintronics. Herein, we disclose quinoidal π-extension of a B/N-heterocycle generating B/N-type diradicaloids. Two π-extended B/N-doped polycyclic hydrocarbons that feature fusion the motif antiaromatic s-indacene or dicyclopenta[b,g]naphthalene core were synthesized. This leads to their electronic nature, which stands in contrast multiple-resonance effect conventional emitters. These have modulated (anti)aromaticity enhanced diradical characters comparing all-carbon analogues, as well intriguing properties, such magnetic activities, narrow energy gaps highly red-shifted absorptions. study thus opens new space both π-systems heterocyclic

Язык: Английский

Процитировано

32
Monosubstituted Doublet Sn(I) Radical Featuring Substantial Unquenched Orbital Angular Momentum DOI
Dongmin Wang, Wang Chen,

Cai Zhai

и другие.

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(12), С. 6914 - 6920

Опубликована: Март 16, 2023

Due to their intrinsic high reactivity, isolation of heavier analogues carbynes remains a great challenge. Here, we report the synthesis and characterization neutral monosubstituted Sn(I) radical (2) supported by sterically hindered hydrindacene ligand, which represents first tin analogue free carbyne. Different from all Sn(I/III) species reported thus far, presence sole Sn-C σ bond in 2 renders remaining two Sn 5p orbitals energetically almost degenerate, one is singly occupied other empty. Consequently, its S = 1/2 ground state possesses two-fold orbital pseudo-degeneracy substantial unquenched angular momentum, as evidenced component g matrix (1.957, 1.896, 1.578) being considerably less than 2. Consistent with this unique electronic structure, can bind an N-heterocyclic carbene afford two-coordinate initiate one-electron transfer benzophenone furnish Sn(II)-ketyl anion adduct. As manifestation Sn-centered nature, reacts diphenyl diselenide p-benzoquinone form Sn-S Sn-O bonds, respectively.

Язык: Английский

Процитировано

25
Rodlike nanomaterials from organic diradicaloid with high photothermal conversion capability for tumor treatment DOI Creative Commons
Tingting Sun,

Jiaxiang Guo,

Hui Wen

и другие.

Aggregate, Год журнала: 2023, Номер 4(5)

Опубликована: Май 25, 2023

Abstract Organic diradicaloids with unique open‐shell structures and properties have been widely used in organic electronics spintronics. However, their advantageous optical explored less the biomedical field. In this work, photothermal conversion behaviors of a boron‐containing diradicaloid (BOD) are reported. BOD can assemble 1,2‐distearoyl‐sn‐glycero‐3‐phosphoethanolamine‐poly(ethylene glycol) to form rodlike nanoparticles (BOD NPs). These as‐prepared NPs exhibit high capability robust stability. Notably, they possess morphological superiority, which guarantees effective therapy tumors. This work thus demonstrates promise as efficient agents for applications.

Язык: Английский

Процитировано

25
An Isolable One‐Coordinate Lead(I) Radical with Strong g‐Factor Anisotropy DOI
Haonan Chen, Wang Chen, Dongmin Wang

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(20)

Опубликована: Март 5, 2024

Abstract Lead‐based radicals in the oxidation state of +1 are elusive species and highly challenging to isolate condensed phase. In this study, we present synthesis characterization first isolable free plumbylyne radical 2 bearing a one‐coordinate Pb(I) atom. It reacts with an N ‐heterocyclic carbene (NHC) afford two‐coordinate NHC‐ligated 3 . represent Pb(I)‐based radicals. Theoretical calculations electron paramagnetic resonance analysis revealed that unpaired mainly resides at Pb 6p orbital both Owing unique nature atom , it possesses two‐fold pseudo‐degeneracy substantial unquenched angular momentum, exhibits hitherto strongest g ‐factor anisotropy ( x,y,z =1.496, 1.166, 0.683) amongst main group Preliminary investigations into reactivity unveiled its Pb‐centered nature, plumbylenes were isolated as products.

Язык: Английский

Процитировано

11
Ambient Temperature Isolation of a Monatomic Boron(0) Complex DOI

William Kennedy,

Vignesh Pattathil,

Yuxiang Wei

и другие.

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Янв. 16, 2025

The first bottleable example of a neutral Group 13 atom bound only by donor ligands (L) has been fully characterized spectroscopic methods and its structure determined single-crystal X-ray diffraction study. A two-coordinate paramagnetic L2B0 complex can readily be accessed through facile reduction reaction is stabilized π-accepting cyclic (alkyl)(amino)carbene (CAAC) ligands. Further (CAAC)2B leads to the isolation stable diamagnetic boride anion. In turn, oxidation putative formation transient cationic borylene, which trapped form boron(I) complex. Density functional theory calculations support formulation as boron(0) strong multiple bonding.

Язык: Английский

Процитировано

2
A highly efficient open-shell singlet luminescent diradical with strong magnetoluminescence properties DOI Creative Commons
Alim Abdurahman, Li Shen, Jingmin Wang

и другие.

Light Science & Applications, Год журнала: 2023, Номер 12(1)

Опубликована: Ноя. 14, 2023

Abstract Developing open-shell singlet (OS) diradicals with high luminescent properties and exceptional single-molecule magnetoluminescence (ML) performance is extremely challenging. Herein, we propose a concept to enhance efficiency by adjusting the donor conjugation of OS diradicals, thereby achieving highly diradical, DR1, outstanding stability making it viable option for use in emitting layer organic light-emitting diodes (OLEDs). More importantly, 0.5 wt%-DR1 doped film demonstrates significant properties. A giant ML value 210% achieved at magnetic field 7 T, showing great potential DR1 magneto-optoelectronic devices.

Язык: Английский

Процитировано

21
A Dynamic Triradical: Synthesis, Crystal Structure, and Spin Frustration DOI
Xue Dong, Qian‐Cheng Luo, Yu Zhao

и другие.

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(31), С. 17292 - 17298

Опубликована: Июль 26, 2023

Polyradicals, i.e., multispin organic molecules, are playing important roles in radical-based material applications for their spin–spin interaction. A dynamic covalently bonded molecule may endow materials with added function such as memory and switching. However, a species has yet to be reported. We here report the synthesis, characterization, crystal structure of triradical species. It is generated by self-assembly two molecules through Lewis acid coupled electron transfer. The crystalline spin-frustrated without Jahn–Teller distortion at low temperature, while it dissociates back diamagnetic starting solution high temperature. reversible process tracked variable-temperature NMR, EPR, UV–vis–NIR spectroscopy. Isolation, property study, bonding investigation on lay foundation design functional polyradicals potential application or switching devices.

Язык: Английский

Процитировано

19
Radical Single-Molecule Junctions DOI
Liang Li, Claudia R. Prindle, Wanzhuo Shi

и другие.

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(33), С. 18182 - 18204

Опубликована: Авг. 9, 2023

Radicals are unique molecular systems for applications in electronic devices due to their open-shell structures. can function as good electrical conductors and switches circuits while also holding great promise the field of spintronics. However, it is both challenging create stable, persistent radicals understand properties junctions. The goal this Perspective address dual challenge by providing design principles synthesis stable relevant junctions, well offering current insight into single-molecule devices. By exploring chemical physical established radical systems, we will facilitate increased exploration development radical-based systems.

Язык: Английский

Процитировано

19