What is C4H4N2?
What is C4H4N2?
Pyrazine is a heterocyclic aromatic organic compound with the chemical formula C4H4N2. It is a symmetrical molecule with point group D2h. Pyrazine is less basic than pyridine, pyridazine and pyrimidine. Pyrazine and a variety of alkylpyrazines are flavor and aroma compounds found in baked and roasted goods.
What is signal intensity NMR?
The magnitude or intensity of nmr resonance signals is displayed along the vertical axis of a spectrum, and is proportional to the molar concentration of the sample. Thus, a small or dilute sample will give a weak signal, and doubling or tripling the sample concentration increases the signal strength proportionally.
How does a proton NMR work?
The principle behind NMR is that many nuclei have spin and all nuclei are electrically charged. The energy transfer takes place at a wavelength that corresponds to radio frequencies and when the spin returns to its base level, energy is emitted at the same frequency.
Is pyrazine a diazine?
A diazine that is benzene in which the carbon atoms at positions 1 and 4 have been replaced by nitrogen atoms. Pyrazine is a heterocyclic aromatic organic compound with the chemical formula C4H4N2. Pyrazine is less basic than pyridine, pyridazine and pyrimidine. …
What is pyrazine ring?
Pyrazine, any of a class of organic compounds of the heterocyclic series characterized by a ring structure containing four atoms of carbon and two of nitrogen. The pyrazine ring is part of many polycyclic compounds of biological or industrial significance.
What does 1H NMR stand for?
Proton nuclear magnetic resonance
Proton nuclear magnetic resonance (proton NMR, hydrogen-1 NMR, or 1H NMR) is the application of nuclear magnetic resonance in NMR spectroscopy with respect to hydrogen-1 nuclei within the molecules of a substance, in order to determine the structure of its molecules.