Is "Hydrogen Bonding" coordinate covalent bond? [closed]








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My textbook says:



> 
> The Oxygen atom of other molecules links to form **coordinate covalent**
> bond with H-atom using lone pair.
> 
> 
> 


Now I am confused. Is H-bonding coordinate covalent bond?




"In a way yes". However, rather than starting from nomenclature to get facts, do the vice versa. Otherwise and again "in a way", they could be seen as permanent dipole-dipole interactions, too.


Hydrogen bonds have energy of about a tenth as compared to covalent bonds. So they are considerably weaker but still stronger than other intermolecular interactions.


Thus, they have a special, energetically intermediate, status that was given a name.


How much one goes into quantum mechanical description (the partially donated lone pair is in a deformed orbital between the X and the H)\* or if one stops at considering a pure electrostatical attraction between partial and essentially point-like charges as done in not too advanced courses I do not know in details. I guess it depends on how deep one want to go with the description.


But the experimental facts are as I have described above.


\*<https://www.tandfonline.com/doi/full/10.1080/23746149.2018.1428915> is an example.


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