1-Lithio-2-butyl-1,2-dihydropyridines, typically formed as intermediates in the nucleophilic substitution (addition/elimination) of pyridine with (n- or t-)butyl lithium, have been isolated and comprehensively characterized. The linear substituted isomer is polymeric while the branched substituted isomer is a cyclotrimer. The lower oligomerization of the latter complex confers exceptional hexane solubility making it an excellent lithium hydride source in non-polar, aliphatic media. A Me6TREN stabilized monomer of the t-butyl complex represents the first 1,2-dihydropyridyllithium complex to be characterized crystallographically.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/c4cc06421f | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Size-dependent phase change in energy storage materials: Comparing the impact of solid-state wetting and of coherency stress.
J Chem Phys
January 2025
Institute of Hydrogen Technology, Helmholtz-Zentrum Hereon, Geesthacht, Germany.
Coherent phase transformations in interstitial solid solutions or intercalation compounds with a miscibility gap are of practical relevance for energy storage materials and specifically for metal hydride or lithium-ion compound nanoparticles. Different conclusions on the size-dependence of the transformation conditions are reached by modeling or theory focusing on the impact of either one (internal, solid-state-) critical-point wetting of the nanoparticle surface or coherency constraints from solute-saturated surface layers. We report a hybrid numerical approach, combining atomistic grand canonical Monte Carlo simulation with a continuum mechanics analysis of coherency stress and modeling simultaneously wetting and mechanical constraints.
View Article and Find Full Text PDFEngineering LiBH-Based Materials for Advanced Hydrogen Storage: A Critical Review of Catalysis, Nanoconfinement, and Composite Design.
Molecules
December 2024
College of Materials Science and Engineering, National Engineering Research Center for Magnesium Alloys, National Innovation Center for Industry-Education Integration of Energy Storage Technology, Chongqing University, Chongqing 400044, China.
Lithium borohydride (LiBH) has emerged as a promising hydrogen storage material due to its exceptional theoretical hydrogen capacity (18.5 wt.%).
View Article and Find Full Text PDFSpectroscopic Insight on Neodymium Solvation in Lithium Borohydride-Supported Electrolyte.
J Phys Chem B
December 2024
Radiochemistry and Nuclear Measurements, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States.
Borohydride-based electrolytes have recently emerged as promising media for the electrodeposition of electropositive metals, including rare earth (RE) elements. While the presence of supporting alkali metal cations and RE counteranions provides essential electrochemical conductivity for achieving fast metal electrodeposition, interactions between the host ligand and solvated neodymium (Nd) complexes remain unclear. This study provides insights into the coordination structure of a concentrated and directly solvated Nd salt in a lithium borohydride-supported electrolyte.
View Article and Find Full Text PDFNickel-Catalyzed Difluoroalkylation of β,γ-Unsaturated α-Amino Nitrile Derived Lithium Reagents.
Angew Chem Int Ed Engl
November 2024
Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Chinese Academy of Sciences), Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, 200032, Shanghai, China.
Organolithium reagents, known for their low cost, ready availability, and high reactivity, allow fast cross-coupling under ambient conditions. However, their direct cross-coupling with fluoroalkyl electrophiles remains a formidable challenge due to the easy formation of thermo-unstable fluoroalkyl lithium species during the reaction, which are prone to decomposition via rapid α/β-fluoride elimination. Here, we exploit heteroatom-stabilized allylic anions to harness the exceptional reactivity of organolithium reagents, enabling the compatibility of difluoroalkyl halides and facilitating versatile and precise fluorine functionality introduction under mild conditions.
View Article and Find Full Text PDFPre-lithiation synergized with magnesiothermic reduction to enhance the performance of SiO anode for advanced lithium-ion batteries.
J Colloid Interface Sci
February 2025
Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), and Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China. Electronic address:
Due to its high theoretical specific capacity, micron-sized silicon monoxide (SiO) is regarded as one of the most competitive anode materials for lithium-ion batteries with high specific energy density. However, originating from the low initial Coulombic efficiency (ICE) and large volume expansion, its large-scale application is seriously hindered. Herein, an easy-to-implement solid-state pre-lithiation method synergized with the magnesiothermic reduction process was performed to enhance the ICE of SiO and a common bimetallic hydride was used as a prelithiation reagent.
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!