A5035064857- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Catalytic Cross-Coupling Reactions
- Synthetic Organic Chemistry Methods
- Asymmetric Hydrogenation and Catalysis
- Crystallography and molecular interactions
- Organophosphorus compounds synthesis
- Adsorption and biosorption for pollutant removal
- Phosphorus compounds and reactions
- Fluorine in Organic Chemistry
- Catalytic C–H Functionalization Methods
- Electrochemical Analysis and Applications
- Cyclopropane Reaction Mechanisms
- Analytical chemistry methods development
Laboratoire de Chimie de Coordination
2018-2024
Institut de Chimie de Nice
2022-2024
Université Côte d'Azur
2022-2024
Université Mohammed VI Polytechnique
2022
Université de Toulouse
2017-2021
Centre National de la Recherche Scientifique
2019-2021
Bis(trichlorosilyl)phosphine (HP(SiCl3)2, 1) was prepared from [TBA][P(SiCl3)2] ([TBA]2, TBA = tetra-n-butylammonium) and triflic acid in 36% yield. Phosphine 1 is an efficient reagent for hydrophosphination of unactivated terminal olefins under UV irradiation (15-60 min) gives rise to bis(trichlorosilyl)alkylphosphines (RP(SiCl3)2, R (CH2)5CH3, 88%; (CH2)7CH3, 98%; (CH2)2C(CH3)3, 76%; CH2Cy, 93%; (CH2)2Cy, 95%; CH2CH(CH3)(CH2)2CH3, 82%; (CH2)3O(CH2)3CH3, (CH2)3Cl, 83%; (CH2)2SiMe3, 92%;...
In this study, the removal of cadmium, copper, and chromium via ion flotation technique from aqueous solutions was investigated with addition Sodium Dodecyl Sulfate (SDS) as a collector. The critical micelle concentration SDS initially determined. Ion tests were conducted on both mono-metal solutions, each containing single metal, multi-metal solution mixture three metals. results demonstrated more effective recovery in achieving over 95 % for 93 only 55 chromium. contrast, showed reduced...
The coordinating properties of N-heterocyclic carbene (NHC) (A), phenolate (B), and phosphonium ylide (C) moieties were investigated systematically through the preparation a family NHC, ylide-based pincer ligands, where third donor extremity can be either an phenolate, or ylide. overall character such ligands [NHC(AaBbCc)] (a + b c = 2) was analyzed by comparison molecular orbitals (energy shape), oxidation potentials (Epox), IR νCO νCN stretching frequencies their isostructural Pd(II)...
The reaction of readily available imidazolium–phosphonium salt [MesIm(CH2)3PPh3](OTf)2 with PdCl2 in the presence an excess Cs2CO3 afforded selectively one step cationic Pd(II) complex [(C,C,C)Pd(NCMe)](OTf) exhibiting LX2-type NHC-ylide-aryl C,C,C-pincer ligand via formal triple C–H bond activation. replacement labile MeCN latter by CNtBu and CO fragments allowed to estimate overall electronic properties this phosphonium ylide core pincer scaffold incorporating three different carbon-based...
The preparation, characterization, and reactivity of Pd(<sc>ii</sc>) complexes the <italic>C</italic>,<italic>C</italic>,<italic>C</italic>-NHC, diphosphonium bis(ylide) pincer ligand LX<sub>2</sub>-type are here described.
NHC Pd(<sc>ii</sc>) complexes featuring a propyl bridge were ionized by the introduction of phosphonium moiety, which may coordinate to metal center or remain pendant.
Thanks to the +PCy3 substituents which are unlikely undergo intramolecular C–H activation, Pd(II) complex [(C,C,C)PdCl](OTf) having a neutral LX2-type NHC, diphosphonium bis(ylide) pincer ligand was selectively prepared by double deprotonation of [(NHC)PdCl2(Py)] precursor with tBuOK. The influence on overall electronic properties this scaffold evaluated IR spectroscopy data corresponding Pd–CO adduct, revealing its stronger electron-donating character in comparison structurally related NHC...
An efficient synthesis of two pincer preligands [Ph2PCH(R)ImCH2CH2CH2PPh3]X2 (R = H, X OTf; R Ph, BF4) was developed. Subsequent reactions with PdCl2 and an excess Cs2CO3 led to the formation highly stable cationic ortho-metalated Pd(II) complexes [(P,C,C,C)Pd]X exhibiting phosphine, NHC, phosphonium ylide, σ-aryl donor extremities. The protonation one latter H affords complex [(P,C,C)Pd(MeCN)](OTf)2 bearing unprecedented nonsymmetrical NHC core scaffold a 5,6-chelating framework. overall...
Abstract Unusual open‐chain tetradentate NHC‐phosphine pre‐ligand [Ph 2 PCH(Ph)ImCH ImC(H)PhPPh ](BF 4 ) was prepared in a good yield by metal‐mediated approach starting from Mn(I) complex [Cp(CO) Mn(η ‐Ph P=C(H)Ph)](BF and bis(imidazole) derivative ImCH Im. Its reaction with Pd(OAc) afforded dicationic Pd(II) of bis(NHC)bis(phosphine) ligand adopting κ PĈĈP coordination mode as mixture two diastereomers. The deprotonation the C(H)Ph bridge latter using KN(SiMe 3 base provided stable...
The stability vs. reactivity of electrophilic 3‐(triphenylphosphonio)‐cyclopropenium salts towards a neutral nucleophile, such as triphenylphosphane, is reported. Depending on the nature cyclopropenyl substituents (R), three‐membered cyclic structure preserved (R = Ph) or evolves by ring opening to isomeric linear allene Mes). respective formation 1,3‐bis(triphenylphosphonio)‐2,3‐diphenylcyclopropene and 3,3‐bis(triphenylphosphonio)‐1,1‐dimesitylallene products rationalized basis steric...