Talk:Hydrogen bond

message: Under 'Definitions and general characteristics' the article stated that "the donor is a Lewis base". The hydrogen bond donor is a proton donor or electron pair acceptor, i.e. it is a Lewis acid, not base. The proton acceptor is the base. Changed accordingly.  — Preceding unsigned comment added by 2A02:8071:AB5:7A00:D49E:1A5A:7F78:DDAB (talk) 19:26, 11 August 2019 (UTC)
thread_title: Lewis acid/base

message: About this : "The initial theory of hydrogen bonding proposed by Linus Pauling suggested that the hydrogen bonds had a partial covalent nature. This remained a controversial conclusion until the late 1990's when NMR techniques were employed by F. Cordier et al. to transfer information between hydrogen-bonded nuclei, a feat that would only be possible if the hydrogen bond contained some covalent character." and the reference given (Cordier et al., J. Magn Res. 1999, 140, 510-512):
I have just looked at this article and it is clearly written in it that other examples of J coupling through hydrogen bonds were known at least one year before them. The most ancient article about this phenomenon seems to be : A. J. Dingley and S. Grzesiek, J. Am. Chem. Soc. 120, 8293–8297 (1998). I hesitated to modify the article myself as I am not sure to understand: is the observation of such a coupling an evidence of the covalent nature of the hydrogen bond ? Or is there something new and decisive on this question in the article of Cordier et al. ? I wonder because they don't claim it at all in their article...
:Other articles that might be relevant (I haven't read any of them, but they were cited in Weinhold and Landis's Valency and Bonding, Cambridge University Press, 2005):
*Summers, MF. J Am Chem Soc 114, 4391 (1992)
*Wütrich K. Proc Natl Acad Sci USA 95, 14147 (1998)
*Shenderovich, SN et al. Ber Bunsenges Phys Chem 102, 422 (1998)
*Cornilescu JS. J Am Chem Soc 121, 2949 (1999)
*Wang YX. J Biomol NMR 14, 181 (1999)
:There have also been discoveries of long-range quantum-mechanical phase coherence that have been used as evidence of the covalent character of the H-bond:
*Isaacs ED et al. Phys Rev Lett 82, 600 (1999); Science 283 (1999)
:I think it would be best not to try to attribute the discovery of evidence of covalent character in hydrogen bonds to any specific author in the article text, because it can be controversial. We can cite some of these references, of course, or a more indirect source such as Valency and Bonding (p. 583). --Itub 09:54, 3 April 2007 (UTC)
thread_title: Theory, covalent nature, references

message: The section on synthetic polymers contains no citations for any of the information. None of the sources in the References discuss the topic. Any possible sources? Lnj19 (talk) 17:10, 29 April 2020 (UTC)
thread_title:  Missing Sources 

message: Substituted at 18:34, 29 April 2016 (UTC)
thread_title: Assessment comment

message: Hydrogen bonding: Homing in on a tricky chemical concept
Paul Needham
Studies in History and Philosophy of Science Part A
Volume 44, Issue 1, March 2013, Pages 51-65
https://doi.org/10.1016/j.shpsa.2012.04.001
Christopher King (talk) 18:48, 19 October 2018 (UTC)
replies: text: --Smokefoot (talk) 21:17, 19 October 2018 (UTC)
thread_title: Possible Reference

message: The opening paragraph here seems to contain a contradictory statement. The first sentence states (emphasis mine):
The final sentence then claims:
As far as I can tell, these two statements directly contradict each other. That said, I don't personally have enough knowledge to editcould someone with the appropriate expertise please reword or clarify?
~ Rent-Yr-Chemicals (talk) 02:45, 19 November 2020 (UTC)
thread_title:  Contradictory Statement in the Opening Paragraph 

message: how can we say that chloroform have h bonds with C as donor? what are the examples where S and Cl act as donors?
also i wanted to know if H bonding occurs by lone pair present on donor or by partial negative charge deveoped on it?Vanshita poddar (talk) 09:55, 27 April 2021 (UTC)
thread_title:  hydrogen bonding by C, Cl and S 

message: Stubby article with one reference that is not mentioned at parent topic. Ost (talk) 06:30, 19 December 2021 (UTC)
thread_title:  Proposed merge of [[Resonance-assisted hydrogen bond]] into [[Hydrogen bond]] 

message: I may be misunderstanding the source, so I did not change it, but it does not seem like the source supports that "the one (atom) covalently bound to the hydrogen is the proton donor." The source linked does not seem to mention a "proton donor", so it would be best to refer to it as hydrogen bond donor, as this source defines the wording. More importantly, the whole group is referred to as the donor, in the linked IUPAC source, with no reference to a single atom being a donor. "X–H represents the hydrogen bond donor" implies that the X, H and the bond (the group itself) is rightly referred to as a donor and not any individual atom. This problem also exists in the nomenclature of the introduction, if it is an actual problem in the definitions section. Another source would need to be used for "donating group" to be used this way, and the statement that IUPAC recommends this nomenclature would also need to be removed. MScottH (talk) 21:26, 12 February 2024 (UTC)
thread_title:  Donor Definition 

message: Matter and Materials 41.121.55.88 (talk) 18:04, 2 June 2024 (UTC)
thread_title:  Natural Science