A5077915925- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Coordination Chemistry and Organometallics
- Organometallic Complex Synthesis and Catalysis
- Crystallography and molecular interactions
- Synthesis and characterization of novel inorganic/organometallic compounds
- Transition Metal Oxide Nanomaterials
- Inorganic Chemistry and Materials
- Catalytic Cross-Coupling Reactions
- Ammonia Synthesis and Nitrogen Reduction
- Advanced Battery Materials and Technologies
- Asymmetric Synthesis and Catalysis
- Advanced NMR Techniques and Applications
- Radical Photochemical Reactions
- Nuclear materials and radiation effects
- Catalysis and Oxidation Reactions
- Muon and positron interactions and applications
- Synthetic Organic Chemistry Methods
- Ionic liquids properties and applications
- Advancements in Battery Materials
- Synthesis and Reactivity of Heterocycles
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Chemical Synthesis and Characterization
- Asymmetric Hydrogenation and Catalysis
- Geriatric Care and Nursing Homes
Newcastle University
1990-2024
University of Birmingham
2024
Newcastle upon Tyne Hospital
2021
In this work, we report the synthesis of a room-temperature-stable electride (RoSE) reagent, namely K+(LiHMDS)e− (1) (HMDS: 1,1,1,3,3,3-hexamethyldisilazide), from accessible starting materials (potassium metal and LiHMDS) via mechanochemical ball milling at 20 mmol scale. Despite its amorphous nature, presence anionic electrons in 1, key diagnostic criteria for an electride, was confirmed by both experimental computational studies. Therefore, definition, 1 is electride. Utilizing electrons,...
Organosodium chemistry is underdeveloped compared with organolithium chemistry, and all the reported organosodium complexes exhibit similar, if not identical, reactivity patterns to their lithium counterparts. Herein, we report a rare monomeric complex, namely, [Na(CH2SiMe3)(Me6Tren)] (1-Na) (Me6Tren: tris[2-(dimethylamino)ethyl]amine) stabilized by tetra-dentate neutral amine ligand Me6Tren. Employing organo-carbonyl substrates (ketones, aldehydes, amides, ester), demonstrated that 1-Na...
Given their very negative redox potential (e.g., Li+ → Li(0), −3.04 V; K+ K(0), −2.93 V), chemical reduction of Group-1 metal cations is one the biggest challenges in inorganic chemistry: they are widely accepted as irreducible synthetic chemistry regime. Their usually requires harsh electrochemical conditions. Herein we suggest a new strategy: via heterobimetallic electride intermediate and using nonbinding "free" electron reductant. Based on our previously reported K+[LiN(SiMe3)2]e–...
Organic solvents are ubiquitously used in synthetic coordination chemistry, but these solution-based methods have severe drawbacks, such as the incapability of isolating highly reactive species which react with the...
The parent organometallic complex, methyllithium, is synthesized and characterised in its monomeric form for the first time. This enabled by a bespoke multidentate neutral amine ligand, namely DETAN.
This work comprehensively investigated the coordination chemistry of a hexa-dentate neutral amine ligand, namely, N,N',N"-tris-(2-N-diethylaminoethyl)-1,4,7-triaza-cyclononane (DETAN), with group-1 metal cations (Li+, Na+, K+, Rb+, Cs+). Versatile modes were observed, from four-coordinate trigonal pyramidal to six-coordinate prismatic, depending on ionic radii and metal's substituent. For comparison, tetra-dentate tris-[2-(dimethylamino)ethyl]amine (Me6Tren) ligand was also studied. defines...
Herein we report two new monomeric lithium and sodium silylbenzyl complexes, which can efficiently convert CO bond in ketones, aldehydes amide into CC bond, i.e. , conducting olefination.
Monomeric organolithium (LiR) complexes could provide enhanced Li-C bond reactivity and suggest mechanisms for a plethora of LiR-mediated reactions. They are highly sought-after but remain synthetic challenge organometallic chemists. In this work, we report the synthesis characterisation monomeric (trimethylsilyl)methyl lithium complex, namely [Li(CH2SiMe3)(κ3-N,N',N''-Me6Tren)] (1), where Me6Tren is tetradentate neutral amine ligand. The structure 1 was comprehensively examined by...
Group-1 metal enolates are key intermediates in a number of reactions. Here, we report series Li, Na and K as hexamers, tetramer monomers, figuring out how their structures influenced by the aggregate size identity.
Multidentate neutral amine ligands play vital roles in coordination chemistry and catalysis. In particular, these are used to tune the reactivity of Group-1 metal reagents, such as organolithium reagents. Most, if not all, reagent-mediated reactions occur solution. However, solution-state behaviors with cations poorly understood, compared plethora solid-state structural studies based on single-crystal X-ray diffraction (SCXRD) studies. this work, we comprehensively mapped out modes for three...
Abstract Transition‐metal oxides (MO x ) play essential roles in chemistry, catalysis, materials science and metallurgy. The MO reduction doping are two ubiquitous reactions academic research industrial manufacturing, but they notoriously energy‐demanding require harsh conditions (high temperatures, long durations). In this work, facilitated by mechanochemical ball milling, we report a new route to conduct at room temperature within 20 minutes enabled milling lithium metal.
Group 1 metal molecular chemistry is dominated by a +1 oxidation state, while 0 state widespread in the metals. A more exotic, yet still available, of group -1, i.e., alkalide. Reported as early 1970s, alkalides appear every modern inorganic textbook an iconic chemical curiosity, their reactivity remains unexplored. This due to synthetic hurdles. In this work, we report first facile synthesis archetypical alkalide complex, [Na