C2H2


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C2H2

chemical formula for acetylene (ethyne).
References in periodicals archive ?
Keep your fingers off my DNA: protein-protein interactions mediated by C2H2 zinc finger domains.
The main hydrocarbon, a product of combustion, from which the PAHs can form is acetylene C2H2.
If Betremieux and Yelle are correct, lightning in the planet's cloud decks is converting about 50 tons of methane to acetylene per second -- fast enough to create a Lake Erie's worth of liquefied C2H2 in about 400 years.
The supply, delivery on the Saclay site and the guarantee of high precision analyzers measuring the following items: - the atmospheric concentration of CO2, CH4, CO and H2O, - the atmospheric concentration CO2, CH4, and H2O (including portable or airborne versions), - the concentration of N2O, CO and H2O, - the concentration of CO2, CH4, H2O and their associated isotopes: 13C-CO2 and / or 13C-CH4, la concentration en CO2, H2O et ses isotopes associs: 13C-CO2, la concentration en CH4, H2O et ses isotopes associs: 13C-CH4, la concentration en CH4, C2H2 et H2O, la concentration en O2, H2O, la formation des utilisateurs, la maintenance curative des analyseurs, la fourniture de pices de rechange destines pallier l~usure normale de certains composants des analyseurs.
The characteristic fragmentation pattern of the mass spectrum of pyridine was observed in almost all the cases with the cleavage of either C2H2 or HCN fragment while the cleavage of -C=N was observed in almost no case which relates to the stability of imine linkage.
The WRKY domain is composed of a conserved WRKYGQK peptide at the N-terminal and a typical zinc finger motif at the C-terminal, with the zinc finger structure as either C2H2 (CX4-5CX22-23HX1H) or C2HC (CX7CX23HX1C).
Conversion of C2H2 to ethylene (C2H4) was recorded through a gas chromatograph (Thermoquest, Trace GC, Model K, Rodono Milan, Italy) equipped with a Porapak N column (2 mm A- 2 m) and a flame ionization detector (FID).