Results 241 to 250 of about 60,159 (283)

2-(Hydroxymethyl)pyridinium dihydrogenphosphate

open access: yesActa Crystallographica Section C Crystal Structure Communications, 2003
The title compound, C(6)H(8)NO(+).H(2)PO(4)(-), consists of 2-(hydroxymethyl)pyridinium and dihydrogenphosphate ions. The dihydrogenphosphate moieties are linked into chains by pairs of P-O-H.O-P hydrogen bonds. The 2-(hydroxymethyl)pyridinium cations are connected to the dihydrogenphosphate units by O-H.O and N-H.O hydrogen bonds.
Demir, S   +2 more
openaire   +4 more sources

Pyridinium dihydrogenmonothiophosphate

Acta Crystallographica Section C Crystal Structure Communications, 2000
By reaction of pyridine dithiomonometaphosphoryl fluoride with ethyldiphenylphosphine in the presence of traces of water, we isolated crystals of the title compound, (I). In the structure of this salt, two kinds of hydrogen bonds were detected. They link N-H (part of the cation), as well as one O-H group (part of the anion), to the phosphoryl O atom of
B, Ziemer, A, Rabis
openaire   +2 more sources

Synthesis of pyridinium heterocyclic ylides. Degradation of the pyridinium group

Journal of Heterocyclic Chemistry, 1981
AbstractThe synthesis of pyridinium‐quinolone chlorides and ylides, a pyridinium‐methylquinazolone ylide, 9‐pyridinium acridine chloride, and their behaviour by treatment with boiling aniline are described.
Marta E. Esteve, Carlos H. Gaozza
openaire   +1 more source

Antimycobacterial Activity of Quaternary Pyridinium Salts and Pyridinium N-oxides - Review

Current Pharmaceutical Design, 2012
The treatment of tuberculosis and other mycobacterioses is still a major world health problem and new antimycobacterial compounds unrelated to approved drugs are in demand. Quaternary ammonium salts have revealed many usable properties especially as antimicrobials; they are widely used as disinfection and antiseptic agents.
Martin, Krátký, Jarmila, Vinšová
openaire   +2 more sources

Reactivity of Halo(pyridinium)carbenes

The Journal of Organic Chemistry, 2009
The reactivity of chloro- and fluoro(N-methyl-3-pyridinium)carbenes was examined by laser flash photolysis, where the halo(pyridinium)carbenes formed ylides with pyridine, acetonitrile, and acetone. Although the halo(pyridinium)carbenes reacted within the time of the laser pulse, their relative reactivities with a series of alkenes could be obtained ...
Reinaldo, Moya-Barrios   +2 more
openaire   +2 more sources

The crystal structure of pyridinium dichloroiodide

Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry, 1973
Pyridinium dichloroiodide, CsNH6ICI2, is trigonal, space group R3m, with a=6.165 (4)A, e= 82.45 (6) °, D,,=2.06 g cm -a (by flotation), Z=I, Dc=2"04 g cm -3. The atomic positions have been determined by least-squares refinement of counterintensities, the final R being 0.023 for 227 reflexions.
Tucker, P. A., Kroon, P. A.
openaire   +2 more sources

The nature of the reduction product in pyridinium chlorochromate and pyridinium dichromate oxidations

Inorganica Chimica Acta, 1984
Les produits de reduction et d'oxydation du titre sont des composes stœchiometriques respectivement de Cr(IV) et de Cr(V)
Damburu M. Patro   +3 more
openaire   +1 more source

Pyridinium salts

Chemistry of Heterocyclic Compounds, 1974
P. P. Zarin'   +2 more
  +5 more sources

With Pyridinium Dichromate

2007
B. Figadère, X. Franck
openaire   +1 more source

Synthesis and antimicrobial activities of new pyridinium and benzimidazolium chlorides

European Journal of Medicinal Chemistry, 2001
Juliusz Pernak
exaly  

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