MNR Spectrum
-Two particular for each carbon, and
-Two common to all carbon atoms that constitute the two orbits of covalence.
These two common atoms of hydrogen that form the covalence orbits are those that can move along this covalence orbits toward the atoms more electronegative that could contain the molecules as we see in the following example of the drawing, ethanol.
In the ethanol the two covalence hydrogen have been captured by the two external orbits of the oxygen atom since this it is very electronegative and so it has more potential of attraction than carbons.
NMR- spectrum
In the drawing of the ethane we see that the produced signal is of a single pick and located in 6 ppm what (as current postulates support) would mean that all the atoms of hydrogen are equivalent and they emit the same frequency.
However an atom of hydrogen usually produces a signal on 1,2 ppm, what would mean that the main reason to emit in 6 ppm is that all the atoms have a peculiar situation that makes them to vibrate jointly and to produce that increase of frequency.
In my opinion and as we see in the drawing, this would mean that they form a quasi-spherical cluster.
We will already see this same property in the benzene.
In the drawing of the ethanol we see three emission frequencies that theoretically would correspond to:
--Signal of 1,2 ppm corresponding to the exterior methyl group to be a group non-dependent neither affected by the other two.
--Sign of 3,7 ppm that would correspond to the hydrogen atoms of the central methyl group, which already is affected by the other two groups and mainly for the oxygen group that gives him an important gravitational increase and therefore an increase in their magnetic frequency.
--Sign 5,1 ppm that would correspond the oxygen group, which develops a much more important gravitational potential and therefore it will give to �its� hydrogen atoms an important increase in their magnetic frequency.
We should remember that the magnetic increase in hydrogen atoms is given because these are inside the gravitational fields of the oxygen atom, and to be oxygen much bigger than carbon atoms, oxygen produce in hydrogen more magnetic fields and therefore more resultant frequency.
The same occur with other bigger or more electronegative atoms.