The 2,5-bis(borolyl)thiophene 2, a conjugated acceptor-π-acceptor system, can be reduced to the monoradical anion [2](.-) , the dianion [2](2-) , and the tetraanion [2](4-) . The dianion [2](2-) was also prepared by a comproportionation reaction and features an absorption maximum in the near-IR region (λmax =800 nm), which is characteristic of a bipolaron with a quinoidal structure.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/anie.201306969 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Synthesis of [Fe[(μ-SeCH)NH](CN)(CO)] and Related Iron Selenoates.
Organometallics
January 2025
School of Chemical Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.
The dianion [Fe[(μ-SeCH)NH](CN)(CO)] ([]) is of interest for the preparation of the selenide analog of the active site of the [FeFe]-hydrogenases. The obvious route for its synthesis by cyanation of Fe[(μ-SeCH)NH](CO) () fails for reasons that this paper explains and resolves. We show that CN cleaves Se-C bonds in .
View Article and Find Full Text PDFSynthesis and characterization of isostructural annulated actinocenes.
Chem Commun (Camb)
January 2025
Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
An isostructural series of four annulated actinocene complexes, M(hdcCOT) (M = Th, U, Np, Pu), is reported. The syntheses proceed through a trivalent starting material when M = U, Np, Pu with subsequent oxidation or, in the case of M = Th, directly from ThCl(DME). X-ray crystallography shows that each actinocene has molecular point symmetry in the solid state, with the metal atoms symmetrically bonded to two 10π-aromatic [8]annulene dianion rings.
View Article and Find Full Text PDFNucleophilic and Electrophilic Molybdenum Terminal Oxo Complexes by Coordination-Induced Bond Weakening of Hydroxo O-H Bonds.
Inorg Chem
January 2025
Department of Chemistry, University of Calgary, 2500 University Dr. NW, T2N 1N4 Calgary, AB Canada.
The extent of coordination-induced bond weakening in aquo and hydroxo ligands bonded to a molybdenum(III) center complexed by a dianionic, pentadentate ligand system was probed by reacting the known complex (BPzPy)Mo(III)-NTf, , with degassed water or dry lithium hydroxide. The aquo adduct was not observed, but two LiNTf-stabilized hydroxo complexes were fully characterized. Computational and experimental work showed that the O-H bond in these complexes was significantly weakened (to ≈57 kcal mol), such that these compounds could be used to form the diamagnetic, neutral terminal molybdenum oxo complex (BPzPy)Mo(IV)O, , by hydrogen atom abstraction using the aryl oxyl reagent ArO• (Ar = 2,4,6-tri--butylphenyl).
View Article and Find Full Text PDFStabilizing Contorted Doubly-Reduced Tetraphenylene with Heavy Alkali Metal Complexation: Crystallographic and Theoretical Evidence.
Chem Asian J
January 2025
Department of Chemistry, University at Albany, State University of New York, Albany, NY, 12222, USA.
The two-fold reduction of tetrabenzo[a,c,e,g]cyclooctatetraene (TBCOT, or tetraphenylene, 1) with K, Rb, and Cs metals reveals a distinctive core transformation pathway: a newly formed C-C bond converts the central eight-membered ring into a twisted core with two fused five-membered rings. This C-C bond of 1.589(3)-1.
View Article and Find Full Text PDFTetrahedral AlO Cage: A Superchalcogen Atom.
J Phys Chem A
January 2025
School of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui 230601, PR China.
Superatoms are stable clusters that mimic the chemical behavior of individual atoms in the periodic table. Many endeavors have been devoted to the design and characterization of various superatoms, while engineering superatoms to mimic the chemistry of chalcogens remains a challenge. In this paper, we present a new superchalcogen by evaluating a hollow tetrahedral AlO cluster with theoretical calculations.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!