Nitrous acid molecular structure

Write structures of different isomers corresponding to the molecular formula, CgtlgN. Write lUPAC names of the isomers which wUl liberate nitrogen gas on treatment with nitrous acid. 

Nitrous acid, acetic acid (as well as the other carboxylic acids), and carbonic acid deviate somewhat from the simple rule in the values of their acid constants. The deviation for nitrous acid and the carboxylic acids can be attributed to their electronic structure—the tendency of first-row atoms to form stable double bonds more easily than heavier atoms. For carbonic acid the low value of the first acid constant is due in part to the existence of some of the unionized acid in the form of dissolved C02 molecules rather han the acid H2C0a. It has been found that the ratio of the concentration of dissolved C02 molecules to H COa molecules is about 25, so that the true acid constant for the molecular species H2CO is about 2 X 10" 4. 

Hyponitrous acid. In contrast to nitrous and nitric acids, hyponitrous acid crystallizes from ether as colourless crystals which easily decompose, explosively if heated. The detailed molecular structure of this acid has not been determined, but it is known that the molecular weights of the free acid and its esters correspond to the double formula, H2N2O2, that it is decomposed by sulphuric acid to N2O, and that it can be reduced to hydrazine, H2N-NH2. Infrared and Raman studies show conclusively that the hyponitrite ion has the trans configuration (a), but the N-N frequency suggests that the central bond has an order of rather less than two. ... 

An amine of unknown structure has the molecular formula CsHiiN. Benzenesulfonyl chloride was added to this amine. The result was a precipitate which was soluble in sodium hydroxide.If the amine had been treated with nitrous acid at 0 C, a reaction would have occurred. A gradual warming to room temperature in the presence of water would have caused a gas to be evolved. Write a possible structure of the amine. 

Ab initio molecular orbital calculations on N0+-(H20) cluster ions. Part I Minimum-energy structures and possible routes to nitrous acid formation ... 

The temperature and density structure of the troposphere, along with the concentrations of major constituents, are well documented and altitude profiles have been measured over a wide range of seasons and latitudes for the minor species water, carbon dioxide, and ozone. A few profiles are available for carbon monoxide, nitrous oxide, methane, and molecular hydrogen, while only surface or low-altitude measurements have been made for nitric oxide, nitrogen dioxide, ammonia, sulfur dioxide, hydrogen sulfide, and nonmethane hydrocarbons. No direct measurements of nitric acid and formaldehyde are available, though indirect information does exist. The concentrations of a number of other important species, such as peroxides and oxy and peroxy radicals, have never been determined. Therefore, while considerable information concerning trace constituent concentrations is available, the picture is far from complete. 

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