Iodide is one of the largest monatomic anions. It is assigned a radius of around 206 picometers. 1120-90-7, formula is C5H4IN, Name is 3-Iodopyridine.For comparison, the lighter halides are considerably smaller: bromide (196 pm), chloride (181 pm), and fluoride (133 pm). In part because of its size, iodide forms relatively weak bonds with most elements. Electric Literature of 1120-90-7.
Wehrle, Robert J.;Rosen, Alexander;Nguyen, Thu Vu;Koons, Kalyn;Jump, Eric;Bullard, Mason;Wehrle, Natalie;Stockfish, Adam;Hare, Patrick M.;Atesin, Abdurrahman;Atesin, Tulay A.;Ma, Lili research published 《 Investigation on the Synthesis, Application and Structural Features of Heteroaryl 1,2-Diketones》, the research content is summarized as follows. A set of unsym. heteroaryl 1,2-diketones RC(O)C(O)Ar [R = i-Pr, Ph, 4-FC6H4, etc.; Ar = 3-pyridinyl, 2-pyrazinyl, 6-quinolinyl, etc.] were synthesized by a heteroarylation/oxidation sequence with up to 65% isolated yields. Palladium catalyst XPhos Pd G4 and SeO2 were the key reagents used in this methodol., and microwave irradiation was utilized to facilitate an efficient and ecofriendly process. The application of heteroaryl 1,2-diketones was demonstrated through the synthesis of an unsym. 2-phenyl-3-(pyridin-3-yl)quinoxaline I from 1-phenyl-2-(pyridin-3-yl)ethane-1,2-dione. The lowest energy conformations of 1-phenyl-2-(pyridin-3-yl)ethane-1,2-dione and I were located using D. Functional Theory (DFT) at the M06-2X/def2-TZVP level of theory. Two lowest energy conformations of 1-phenyl-2-(pyridin-3-yl)ethane-1,2-dione differed with respect to the position of the N atom in the pyridyl ring and 0.27 kcal/mol energy difference between them corresponds to 60.4 and 39.6% at 50 ° C in toluene. Four lowest energy conformations for I had the energy differences of 0.01, 0.03 and 0.07 kcal/mol that corresponds to 26.0, 25.7, 24.9 and 23.4%, resp. A comparison of 1-phenyl-2-(pyridin-3-yl)ethane-1,2-dione and I to the less hindered analogs (oxalyl chloride and oxalic acid) was used to investigate the structural features and bonding using Natural Bond Orbital (NBO) anal.
Electric Literature of 1120-90-7, 3-Iodopyridine is a heteroaryl halide. It undergoes microwave-assisted coupling with heterocyclic compounds (pyrazole, imidazole, pyrrole and indole) to afford the corresponding N-3-pyridinyl-substituted heterocyclic compounds.
3-Iodopyridine is a useful research chemical used as a reactant in the copper-catalyzed coupling of alkylamines and aryl iodides.
3-Iodopyridine is an isomeric compound that can be synthesized by cross-coupling reactions. This compound has been shown to have nicotinic acetylcholine receptor binding properties and may be useful in the treatment of Alzheimer’s disease. 3-Iodopyridine is a primary amino acid that can be used for the synthesis of amines, which are nitrogen nucleophiles. It has been crystallized with halides and its x-ray structures have been determined. The nmr spectra of 3-iodopyridine show that it contains phosphorus and nitrogen atoms. 3-Iodopyridine is also able to take up nitrate ions from solution, which may be due to its uptake properties., 1120-90-7.
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com