[a student]

hi
can you tell me what is the dipole moment exactly, I can't understand how it influences on NOE (over hauser)

[kimyaa2]

dipole moment goes from less electronagtive to the most electronegative..

[lucas89]

A dipole moment is essentially the value of how electronegative a molecule is as a whole (ie. it's degree of polarity). More polar molecules such as HF have a large dipole moment (measured in debye), whereas CO2, being non-polar, has no dipole moment.

[Borek]

A dipole moment is essentially the value of how electronegative a molecule is as a whole

Very dangerous and potentially confusing statement. These are different concepts.

[adnan]

Moment -           A turning force produced by object acting at a distance.

Dipole moment-   The degree of polarity of a molecule is expressed in terms of dipole moment.
                                             or
                                The product magnitude of charge on the atoms and the distance between the two bonded atoms.
For detail study..
http://www.chemistry.mcmaster.ca/esam/Chapter_7/section_3.html

[a student]

thank you very much for your help