18241-35-5

Usage

Type of compound

Pyridinium derivative

Physical state

Colorless to pale yellow liquid

Odor

Strong

Usage

a. Reactant in organic synthesis
b. Catalyst in various reactions
c. Corrosion inhibitor
d. Intermediate in the production of pharmaceuticals and agricultural chemicals

Hazard

Flammable and potentially hazardous substance

Safety precautions

Requires careful handling and storage to prevent accidents and exposure

Upstream product

• 108-89-4 picoline 
• 80-48-8 methyl p-toluene sulfonate 
• 333-27-7 methyl trifluoromethanesulfonate 
• 74-88-4 methyl iodide 
• 2301-80-6 N-methyl-4-methylpyridinium iodide 

Downstream Products

• 1046097-06-6 C₂₄H₃₃N₂O₂S₂⁽¹⁺⁾ 
• 1450913-40-2 C₂₄H₃₃N₂S₄⁽¹⁺⁾ 
• 1450913-35-5 C₂₆H₃₉N₂S₄⁽¹⁺⁾ 
• 1450913-42-4 C₂₉H₃₂N₅⁽¹⁺⁾ 
• 1450913-25-3 C₂₆H₂₅N₄⁽¹⁺⁾ 
• 1450913-22-0 C₄₂H₄₅N₈⁽¹⁺⁾ 
• 1450913-17-3 C₃₄H₃₅N₆⁽¹⁺⁾ 

Related news

Preparation of [tris(1,3-dithiole-2-thione-4,5-dithiolato)antimonate(1−)] complexes, [Sbv(dmit)3]−. Crystal structure of the 1,4-DIMETHYLPYRIDINIUM (cas 18241-35-5) salt08/02/2019

Ionic complexes, [Q] [Sb(dmit)3] [Q = 1,4-Me2-pyridinium of NEt4], have been isolated from the reaction of [Q]2 [Zn(dmit)2] and SbI5, prepared in situ from SbI3 and I2 (H2-dmit = 4,5-dimercapto-1,3-dithiole-2-thione). A crystal structure determination of [1,4-Me2-pyridinium] [Sb(dmit)] revealed ...detailed

Synthesis, crystal structure and triboluminescence spectrum of 1,4-DIMETHYLPYRIDINIUM (cas 18241-35-5) tetrakis (2-thenoyltrifluoroacetonato)europate08/01/2019

Triboluminescent phenomenon of 1,4-dimethylpyridinium tetrakis(then oyltrifluoroacetonato) europate (1) was firstly observed. Its crystal structure and the triboluminescent spectrum were successfully determined. The crystal is centrosymmetric and the Eu atom exhibits an eight-coordinate tetragon...detailed

Relevant academic research and scientific papers

Ultrafast excited state dynamics controlling photochemical isomerization of N-methyl-4-[trans-2-(4-pyridyl)ethenyl]pyridinium coordinated to a {Re i(CO)3(2,2′-bipyridine)} chromophore

Two multifunctional photoactive complexes [Re(Cl)(CO)3- (MeDpe+)2]2+ and [Re(MeDpe+)(CO) 3(bpy)]2+ (MeDpe+ = N-methyl-4-[trans-2-(4- pyridyl)ethenyl]pyridinium, bpy = 2,2′-bipyridine) were synthesized, characterized, and their redox and photonic properties were investigated by cyclic voltammetry; ultraviolet-visible-infrared (UV/Vis/IR) spectroelectrochemistry, stationary UV/Vis and resonance Raman spectroscopy; photolysis; picosecond time-resolved absorption spectroscopy in the visible and infrared regions; and time-resolved resonance Raman spectroscopy. The first reduction step of either complex occurs at about - 1.1 V versus Fc/Fc + and is localized at MeDpe+. Reduction alone does not induce a trans→cis isomerization of MeDpe+. [Re(Cl)(CO) 3(MeDpe+)2]2+ is photostable, while [Re(MeDpe+)(CO)3(bpy)]2+ and free MeDpe + isomerize under near-UV irradiation. The lowest excited state of [Re(Cl)(CO)3(MeDpe+)2]2+ has been identified as the Re(Cl)(CO)3 → MeDpe+ 3MLCT (MLCT = metal-to-ligand charge transfer), decaying directly to the ground state with lifetimes of ≈ 42 (73%) and ≈ 430 ps (27%). Optical excitation of [Re-(MeDpe+)(CO)3(bpy)]2+ leads to population of Re(CO)3→MeDpe+ and Re(CO) 3→bpy 1MLCT states, from which a MeDpe+ localized intraligand 3ππ* excited state (3IL) is populated with lifetimes of ≈ 0.6 and ≈ 10 ps, respectively. The 3IL state undergoes a ≈ 21 ps internal rotation, which eventually produces the cis isomer on a much longer timescale. The different excitedstate behavior of the two complexes and the absence of thermodynamically favorable interligand electron transfer in excited [Re(MeDpe+)(CO) 3(bpy)]2+ reflect the fine energetic balance between excited states of different orbital origin, which can be tuned by subtle structural variations. The complex [Re(MeDpe+)(CO) 3(bpy)]2+ emerges as a prototypical, multifunctional species with complementary redox and photonic behavior.

EVIDENCE OF THE SINGLET RADICAL PAIR PRECURSOR IN THE PHOTOLYTIC GENERATION OF 1,4-DIMETHYLPYRIDINYL RADICAL FROM ITS DIMER.

Time-resolved ESR spectra of the 1,4-dimethylpyridinyl radical were observed after the photolysis of its dimer with a N2 laser.Since the transient ESR spectra exhibited the A/E polarization, singlet radical pair is proposed as the precursor of the present radical on the basis of simple sign rule.