77972-47-5

Basic information

• Product Name: N - Methyl - 2,2' - bipyridiniuM iodide
• Synonyms: N - Methyl - 2,2' - bipyridiniuM iodide;1-methyl-2-pyridin-1-ium-2-ylpyridin-1-ium;1-Methyl-2-(2-pyridyl)pyridinium Iodide;2,2'-Bipyridinium, 1-methyl-, iodide
• CAS NO: 77972-47-5
• Molecular Formula: C₁₁H₁₁N₂*I
• Molecular Weight: 426.03532
• EINECS: -0
• Mol File: 77972-47-5.mol
• Article Data: 8

Chemical Properties

• Melting Point: 147.0 to 151.0 °C
• Appearance: /
• CAS DataBase Reference: N - Methyl - 2,2' - bipyridiniuM iodide(CAS DataBase Reference)
• NIST Chemistry Reference: N - Methyl - 2,2' - bipyridiniuM iodide(77972-47-5)
• EPA Substance Registry System: N - Methyl - 2,2' - bipyridiniuM iodide(77972-47-5)

Safety Data

• Hazardous Substances Data: 77972-47-5(Hazardous Substances Data)

Upstream product

• 366-18-7 [2,2]bipyridinyl 
• 74-88-4 methyl iodide 

Downstream Products

• 152194-39-3 6-(diphenylphosphino)-2,2'-bipyridine 
• 13040-77-2 6-Chloro-[2,2']bipyridinyl 
• 10495-73-5 2-bromo-6-(pyridin-2-yl)pyridine 
• 154928-15-1 1-methyl-2,2'-bipyridine-6-one 
• 366-18-7 [2,2]bipyridinyl 

Relevant articles and documents

-

-

Cyclometalated Ir(III) complexes of deprotonated N-methylbipyridinium ligands: Effects of quaternised N centre position on luminescence

Six new tricationic IrIII complexes of cyclometalating ligands derived from 1-methyl-2-(2′-pyridyl)pyridinium or 1-methyl-4-(2′-pyridyl)pyridinium are described. These complexes of the form [IrIII(C∧N)2(N∧N)]3+ (C∧N = cyclometalating ligand; N∧N = α-diimine) have been isolated and characterised as their PF6- and Cl- salts. Four of the PF6- salts have been studied by X-ray crystallography, and structures have been obtained also for two complex salts containing MeCN and Cl- or two Cl- ligands instead of N∧N. The influence of the position of the quaternised N atom in C∧N and the substituents on N∧N on the electronic/optical properties are compared with those of the analogous complexes where C∧N derives from 1-methyl-3-(2′-pyridyl)pyridinium (B. J. Coe, et al., Dalton Trans., 2015, 44, 15420). Voltammetric studies reveal one irreversible oxidation and multiple reduction processes which are mostly reversible. The new complexes show intramolecular charge-transfer absorptions between 350 and 450 nm, and exhibit bright green luminescence, with λmax values in the range 508-530 nm in both aqueous and acetonitrile solutions. In order to gain insights into the factors that govern the emission properties, density functional theory (DFT) and time-dependent DFT calculations have been carried out. The results confirm that the emission arises largely from triplet excited states of the C∧N ligand (3LC), with some triplet metal-to-ligand charge-transfer (3MLCT) contributions.

HPLC analysis of aliphatic sulfonate surfactants using ion-pair detection

A method was developed for the analysis of a number of surfactants which contained no UV-chromophores, using RP-HPLC with Indirect Photometric Detection, IPD. Pyridinium salts such as N-methylpyridinium iodide, N-methyl-2,2′- dipyridinium iodide and N,N′-dimethyl-2,2′-dipyridinium diiodide, were used as the visualization reagents, forming ion-pair complexes with the sulfonate surfactants. This allowed ordinary UV-detection. N-methylpyridinium iodide proved to be a suitable reagent, both with respect to ease of preparation and response. The eluents consisted of mixtures of acetonitrile and water, being 0.1 - 0.25 mM with respect to pyridinium salt. The method was sensitive and exhibited good signal to noise ratios, as well as linear responses over a wide concentration range. All of the analyzed surfactants were separated, including the diastereomeric forms of some of the surfactants.