A5041209369- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Organometallic Complex Synthesis and Catalysis
- Coordination Chemistry and Organometallics
- Crystallography and molecular interactions
- Radioactive element chemistry and processing
- Inorganic Chemistry and Materials
- Carbon dioxide utilization in catalysis
- Magnetism in coordination complexes
- biodegradable polymer synthesis and properties
- Chemical Synthesis and Characterization
- Polyoxometalates: Synthesis and Applications
- Cyclopropane Reaction Mechanisms
- Synthesis and characterization of novel inorganic/organometallic compounds
- Chemical Synthesis and Reactions
- Luminescence and Fluorescent Materials
- Chemical Reactions and Mechanisms
- Synthesis and Biological Evaluation
- Lanthanide and Transition Metal Complexes
- Asymmetric Hydrogenation and Catalysis
- Synthetic Organic Chemistry Methods
- Molecular Sensors and Ion Detection
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Synthesis and biological activity
- Innovative Educational Techniques
Henan Agricultural University
2025
Southwest University
2013-2024
Chongqing University
2019
Beijing Normal University
2011-2015
The synthesis, structure, and reactivity of thorium oxo sulfido metallocenes have been comprehensively studied. Heating an equimolar mixture the dimethyl metallocene [η(5)-1,2,4-(Me(3)C)(3)C(5)H(2)](2)ThMe(2) (2) bis-amide [η(5)-1,2,4-(Me(3)C)(3)C(5)H(2)](2)Th(NH-p-tolyl)(2) (3) in refluxing toluene results base-free imido metallocene, [η(5)-1,2,4-(Me(3)C)(3)C(5)H(2)](2)Th═N(p-tolyl) (4), which is a useful precursor for preparation [η(5)-1,2,4-(Me(3)C)(3)C(5)H(2)](2)Th═E (E = O (5) S (15))...
The reduction of [η5-1,2,4-(Me3C)3C5H2]2ThCl2 (1) with potassium graphite in the presence 2,2′-bipyridine gives purple thorium bipy metallocene [η5-1,2,4-(Me3C)3C5H2]2Th(bipy) (2) good yield. Complex 2 has been characterized by various spectroscopic techniques, elemental analysis, and single-crystal X-ray diffraction. is a synthon for low-valent thorium, as shown reactivity silver halides, trityl chloride, pyridine-N-oxide, RN3, 9-diazofluorene, diphenyl diselenide, yielding halide...
Abstract The synthesis, structure, and reactivity of a base‐free thorium terminal‐imido metallocene have been comprehensively studied. Treatment metallocenes [{η 5 ‐1,2,4‐(Me 3 C) C H 2 } ThMe ] ‐1,3‐(Me with RNH gives diamides Th(NHR) (R=Me ( 7 ), p ‐tolyl 8 )) Th(NH‐ ‐tolyl) 9 respectively. Diamides do not eliminate methylamine or ‐toluidine, but sublime without decomposition at 150 °C under vacuum (0.01 mmHg), whereas diamide is converted 140 °C/0.01 mmHg into the primary amine ‐tolyl‐NH...
The first thorium poly-carbene complexes [(Ph2PS)2C]2Th(DME) (2) and [{[(Ph2PS)2C]3Th}Li2(DME)]n (3) have been prepared structurally characterized. DFT calculations reveal that the ThC bond is polarized toward nucleophilic carbene carbon atom, which further verified by experimental observation shows a behavior with Ph2CO.
The synthesis, structure, and reactivity of an actinide metallacyclopropene were comprehensively studied. reduction [η(5)-1,2,4-(Me3C)3C5H2]2ThCl2 (1) with potassium graphite (KC8) in the presence diphenylacetylene (PhC≡CPh) yields first stable [η(5)-1,2,4-(Me3C)3C5H2]2Th(η(2)-C2Ph2) (2). magnetic susceptibility data show that 2 is indeed a diamagnetic Th(IV) complex, density functional theory (DFT) studies suggest 5f orbitals contribute to bonding Th-(η(2)-C═C) moiety. Complex shows no...
The reaction of the base-free terminal thorium imido complex [{η(5)-1,2,4-(Me3C)3C5H2}2Th=N(p-tolyl)] (1) with p-azidotoluene yielded irreversibly tetraazametallacyclopentene [{η(5)-1,2,4-(Me3C)3C5H2}2Th{N(p-tolyl)N=N-N(p-tolyl)}] (2), whereas bridging [{[η(5)-1,2,4-(Me3C)3C5H2]Th(N3)2}2{μ-N(p-tolyl)}2][(n-C4H9)4N]2 (3) was isolated from 1 [(n-C4H9)4N]N3. Unexpectedly, upon treatment 9-diazofluorene, NN bond cleaved, an N atom transferred, and η(2)-diazenido iminato...
The synthesis, structure and reactivity of a new bipy thorium metallocene have been studied. reduction the chloride [η5-1,3-(Me3C)2C5H3]2ThCl2 (1) with potassium graphite in presence 2,2′-bipyridine gives purple [η5-1,3-(Me3C)2C5H3]2Th(bipy) (2) good yield. Complex 2 has fully characterized by various spectroscopic techniques, elemental analysis X-ray diffraction analysis. reacts cleanly trityl chloride, silver halides diphenyl diselenide, leading to halide metallocenes...
The Si–H bond addition to a terminal actinide imido complex was comprehensively studied. base-free thorium [η5-1,2,4-(Me3C)3C5H2]2ThN(p-tolyl) (1) activates bonds in PhSiH3 or Ph2SiH2 give the amido hydrido metallocenes [η5-1,2,4-(Me3C)3C5H2]2Th(H)[N(p-tolyl)SiH2Ph] (2) and [η5-1,2,4-(Me3C)3C5H2]2Th(H)[N(p-tolyl)SiHPh2] (3), respectively. Complex 2 readily inserts unsaturated molecules into Th–H bond, whereas 3 reversibly an intramolecular aromatic C–H yield...
Bipyridyl thorium metallocenes [η5-1,2,4-(Me3C)3C5H2]2Th(bipy) (1) and [η5-1,3-(Me3C)2C5H3]2Th(bipy) (2) have been investigated by magnetic susceptibility computational studies. The data reveal that 1 2 are not diamagnetic, but they behave as temperature independent paramagnets (TIPs). To rationalize this observation, density functional theory (DFT) complete active space self-consistent field (CASSCF) calculations undertaken, which indicated Cp′2Th(bipy) has indeed a Th(IV)(bipy2−) ground...
The base-free thorium terminal imido [η5-1,2,4-(Me3C)3C5H2]2Th═N(p-tolyl) (1) activates a variety of small molecules such as pyridine derivatives, amines, boranes, chlorosilane, elemental selenium, and α,β-unsaturated esters. Reaction 1 with pyridine, N-oxide, 2-methylpyridine p-toluidine, Ph2NH, 9-borabicyclo[3.3.1]nonane (9-BBN), PhSiH2Cl, PhSeSePh, methyl methacrylate (MMA) formed the amido pyridyl complexes [η5-1,2,4-(Me3C)3C5H2]2Th(NH-p-tolyl)(η2-C,N-C5H4N) (2),...
The first example of a 2,2′-bipyridyl radical calcium complex, [CH 3 C(N-2,6- i Pr 2 C 6 H )CHC(CH )NCH CH N(CH ) ]Ca(bipy)(THF), was prepared and characterized shown to react as calcium( synthon.
The reactivity of the magnesium alkyl {[HC(C(Me)N-2,6-iPr2C6H3)2]Mg(nBu)}2 (1) toward various small molecules provides access to a variety derivatives. For example, insertion elemental chalcogens (S8 and Se8) into Mg-C bond complex 1 gives dimeric thiolate {[HC(C(Me)N-2,6-iPr2C6H3)2]Mg(μ-SnBu)}2 (2), selenolate [HC(C(Me)N-2,6-iPr2C6H3)2]Mg(SenBu)(THF) (3), diselenolate [HC(C(Me)N-2,6-iPr2C6H3)2]Mg(Se2nBu)(THF) (4). Meanwhile, compound 4 can be readily obtained by further one selenium atom 3....
Azobenzenyl anion radical complex of magnesium [HC(C(Me)N-2,6-iPr2C6H3)2]Mg(PhNNPh) (THF) (2) was obtained for the first time through reaction [HC(C(Me)N-2,6-iPr2C6H3)2]MgBr (1) with potassium graphite in presence azobenzene. Complex 2 is a useful electron-transfer reagent as shown by reactivity diphenyl disulfide, diselenide, oxygen, sulfur, and Me3SiN3 yielding thiolate [HC(C(Me)N-2,6-iPr2C6H3)2]Mg(SPh)(THF) (3), selenolate [HC(C(Me)N-2,6-iPr2C6H3)2]Mg(SePh)(THF) (4), peroxido...
Lanthanocene and cerocene alkyl complexes [η5-1,3-(Me3C)2C5H3]2Ln(CH2C6H4-o-NMe2) (Ln = La 3 Ce 4) were obtained from the salt metathesis of {[η5-1,3-(Me3C)2C5H3]2Ln(μ3-κ3-O3SCF3)2K(THF)2}2·THF 1·THF 2·THF) with LiCH2C6H4-o-NMe2. Reactivity 4 toward various small molecules provides access to a series lanthanide derivatives. For example, reactions elemental chalcogens (sulfur selenium) in 1:1 molar ratio give thiolates {[η5-1,3-(Me3C)2C5H3]2Ln(μ-SCH2C6H4-o-NMe2)}2 5 6) selenolates...
Attempted preparation of a low-valent Ca(I) complex by reduction Ca iodide precursor [LCaI(THF)]2 (1) (L = [CH3C(NAr)CHC(CH3)NCH2CH2N(CH3)2]-, Ar 2,6-iPr2C6H3), with KC8 led to isolation dinuclear calcium azaallyl {[H2CC(NAr)CHC(CH3)(NCH2CH2N(CH3)2)]Ca(THF)}2 (2). Alternatively, reaction 1 in the presence azobenzene gives an azobenzenyl LCa(PhNNPh)(THF) (3). The electron paramagnetic resonance and UV-vis spectra 3 suggest that (PhNNPh) moiety should be regarded as radical anion. Complex can...