lflage/wiki-talks huggingface dataset:
Talk:Copaene

message: I'm confused about what the article says about the economic impact of this. If this chemical attracts the bugs, wouldn't that be a bad thing for crops?Kpstewart (talk) 19:13, 15 May 2009 (UTC)
thread_title: Strongly attracting to Ceratitis capitata?

message: One can supposedly put such chemical into a trap and then attract bugs into it. See, for example, http://www.safeagriculturebd.com/pheromone.html (Alex, chemist) 11:54, 18 June 2012 (UTC)
thread_title: Re: Strongly attracting to Ceratitis capitata?
Talk:Copper indium gallium selenide

message: It is confusing having this CIGS article, but not including CIS here, or having an article here.  But they both seem to be covered in the main Solar cell article, so it may not matter.-69.87.204.146 20:54, 26 May 2007 (UTC)
thread_title:  CIS 

message: it is kind of confusing what the maximum efficiency of the different types of solar panels are.  The main solar panel article has efficiencies of over 40% for monocrystaline multijunction solar cells, not ~25%.  Which is correct? 32.136.244.183 (talk) 14:55, 8 September 2008 (UTC)
thread_title:  Efficiency 

message: claims independantly verified 14.3% Rod57 (talk) 23:10, 2 September 2010 (UTC)
thread_title:  New record efficiency
Talk:Copper sulfide

message: On Copper sulfide, the idea of merging copper(I) sulfide and Copper(II) sulfide is proposed. 
*support.  There is no copper(II) sulfide - covellite is a blend of copper(II) and copper(I).  This awkward fact suggests that the separation of articles based on oxidation state is artificial and misleading.--Smokefoot (talk) 23:55, 13 May 2009 (UTC)
replies: text: Nothing dramatic is likely to happen here.  The merge proposal was made by User:Kpstewart who has no serious experience editing chemistry, so it's a "drive-by proposal" by a disinterested party (the same editor proposed merger of hydrogen bromide and hydrobromic acid, a topic which we have dealt with long ago).  I do not supporting merger of all of these Cu-S articles.  But the situation is worth reviewing in view of the fact that in parallel with the Cu-S articles we have a family of mineral articles.--Smokefoot (talk) 13:05, 14 May 2009 (UTC)
replies: text: Now I am confused - do you support the merger of these three articles or not?--Axiosaurus (talk) 15:12, 14 May 2009 (UTC)
thread_title: Merger proposal
Talk:Copper(I) bromide

message: Copper powder cannot react with a nonoxidizing acid, such as HBr, HCl, HI, or any other hydro acid. The H+ ion is not strong enough to oxidize the Cu to Cu+. --Chemicalinterest (talk) 21:40, 28 April 2010 (UTC)
thread_title:  Reaction of Copper powder with Hydrobromic acid
Talk:Copper(II) bromide

message: The section on crystal structure appears wrong, as it does not deal with CuBr2. The structure described is that of bis(tetrapropylammonium) hexabromodicuprate(II), as reported in JACS 1991, 113, 5253. --Albris (talk) 19:25, 17 January 2014 (UTC)
thread_title:  Cristal structure
Talk:Jean de Beaugrand

message: ==Untitled==
there are two or three Jean de Beaugrand : the father was litographist, the son was a pupil of François Viète and a friend of Pierre de Fermat, he thought that Descartes had stolen his algebra from Viète and Thomas Harriot, therefore, Descartes was very angry against him and treated him geostaticien. We have to cut this page in two : Jean de Beaugrand (litography) and  Jean de Beaugrand (mathematician). Further : it's not well proved that they were father and son. So we may have a third Jean, son of the father, lithographist, but not mathematician... Jean de Parthenay (talk) 11:26, 21 June 2009 (UTC)
thread_title: = a problem 

message: there are two or three Jean de Beaugrand : the father was litographist, the son was a pupil of François Viète and a friend of Pierre de Fermat, he thought that Descartes had stolen his algebra from Viète and Thomas Harriot, therefore, Descartes was very angry against him and treated him geostaticien. We have to cut this page in two : Jean de Beaugrand (litography) and  Jean de Beaugrand (mathematician). Further : it's not well proved that they were father and son. So we may have a third Jean, son of the father, lithographist, but not mathematician... Jean de Parthenay (talk) 11:26, 21 June 2009 (UTC)
thread_title: Untitled
Talk:Coprostanol

message: What's higher animals? Animals on mountains? ;) Should be more specific. 121.122.82.82 (talk) 17:05, 26 June 2014 (UTC)
thread_title:  higher animals 

message: Term not used in article. 86.159.197.174 (talk) 04:21, 22 August 2014 (UTC)
thread_title:  Why does "coprosterol" redirect here?
Talk:Corrin

message: The methylene description is taken from http://www.chm.bris.ac.uk/motm/vitaminb12/structure.html without any consideration on what is shown in the figure. There is no need to distinguish between the two type of methylene groups (2 x =(CCH3)- vs 1 x =(CH)- ) which are technically BOTH methine groups if we do not show the methyl groups on the ring. Otherwise we have to use terms like methylmethine(?) vs methine --Kupirijo 09:04, 2 February 2007 (UTC)
thread_title:  Methylene groups 

message: It's incorrect. The embedded link to CommonChemistry.org finds no such registered chemical. The CAS No 274-76-0 corresponds to Imidazo[1,2-a]pyridine in Sigma's catalog.150.135.165.27 (talk) 17:18, 11 September 2018 (UTC)
thread_title: CAS number
Talk:Coumarin

message: make a suggestion 111.88.84.193 (talk) 04:12, 20 October 2022 (UTC)
thread_title:  types of coumarin 

message: Pharmaceutical application of couramine 5 flouracial 206.84.190.103 (talk) 15:05, 7 November 2022 (UTC)
thread_title:  Nano technology
Talk:A Place in the World (Upstairs, Downstairs)

message: There's an error in this article that I'm unable to resolve.  The article is about an episode called "A Place in the World" but very soon into the article, we are told about the shooting schedule of a differently-named episode.  I can't tell if it's merely a mistake in attributing the title to the shooting schedule or whether the schedule itself is in error.  Perhaps a fan can oblige. Accounting4Taste 20:45, 14 May 2007 (UTC)
replies: text: Thanks for pointing this out. The problem was I copy and paste when I create a new episode page, and here forgot to change the title in that section. Thanks again. --UpDown 16:55, 15 May 2007 (UTC)
thread_title:  Error 
Talk:Cumene

message: Cumene is not a common name for isopropylbenzene
I started undergrad as a chemical engineer in 1989, and with the exception of a 3 year return to graduate school, I have been working in the field since graduating.  Up until reading this on wikipedia today, I have never even heard of the word cumene.  Everyone refers to this chemical as isopropylbenzene or, less commonly, methylethylbenzene.  I don't think anyone actually refers to it as cumene anymore, or if they do, they are in a distinct minority.
: See Cumene processSandcherry (talk) 17:50, 5 July 2022 (UTC)
replies: text: Pubmed search on cumene as a title word brings up 1,779 results.Eaberry (talk) 04:21, 15 June 2023 (UTC)
thread_title: Untitled

message: The US EPA reports cumene vapor pressure as 4.5 mmHg (0.6 kPa) at 25 C.  This is different than the value in the article which is based on the NIOSH value of 8mmHg at 20 C.  Any thoughts on resolving this discrepancy?
https://www.epa.gov/sites/default/files/2016-09/documents/cumene.pdf#:~:text=Cumene%20occurs%20as%20a%20colorless%20flammable%20liquid%20that,partition%20coefficient%20%28log%20K%20ow%29%20is%203.66.%20%281%29 Sandcherry 
: Another source confirming the US EPA value is "Daubert, T.E., R.P. Danner. Physical and Thermodynamic Properties of Pure Chemicals Data Compilation. Washington, D.C.: Taylor and Francis, 1989".  There are other sources with the same value.Sandcherry (talk) 21:01, 5 July 2022 (UTC)
thread_title:  Vapor pressure 

message: Cuminaldehyde, major component of the aroma of the spice cumin, can be synthesized by formylation of cumene. So I wonder if cumene was first prepared by deformylation of cuminaldehyde, or if the name was adopted after the structural similarity was recognized. Eaberry (talk) 04:35, 15 June 2023 (UTC)
thread_title:  Source of the name?
Talk:Cuminaldehyde

message: Is this the same compound cuminol mentioned in the article terephthalic acid? Albmont (talk) 16:26, 14 December 2009 (UTC)
replies: text: They are related, but not the same.  Cuminol has an alcohol functional group in place of the aldehyde group in cuminaldehyde.  -- Ed (Edgar181) 16:37, 14 December 2009 (UTC)
replies: text:  I did a web search, and I almost added a redirect - thanks for preventing me for vandalizing wikipedia again. Albmont (talk) 17:20, 14 December 2009 (UTC)
thread_title:  Cuminol? 

message: Is the IUPAC name of cuminaldehyde really 4-(1-methylethyl)benzaldehyde? I'd rather say it's 4-isopropylbenzaldehyde, 4-(2-propyl)benzaldehyde or even 4-(propan-2-yl)benzaldehyde. Mehinger (talk) 17:53, 22 April 2012 (UTC)
thread_title:  IUPAC Name
Talk:Cyanamide

message: Hello. There is an article on carbodiimide. Should we remove the tautomer from the chembox? --kupirijo (talk) 01:16, 22 February 2011 (UTC)
replies: text: The equation indicates that cyanamide exists in two forms, which is relevant to understanding its basic chemistry of cyanamide.  It would be interesting to know the equilibrium constants for the tautomerization for various solvents, and/or perhaps the enthalpy and entropy of the change.  A crystal structure of this material must have been reported as well.--Smokefoot (talk) 13:44, 22 February 2011 (UTC)
thread_title:  carbodiimide 
Talk:Cycloartenol

message: I count 31 carbons in the diagram, as opposed to 30 in the molecular formula. What gives here?
According to the molecular formulas, cycloartenol and lanosterol are isomers. It sould help if the article was very particular on the differences. --  Solo Owl   20:08, 30 August 2013 (UTC)
thread_title:  Structure
Talk:Man or Astro-man? in Orbit

message: What on Earth does that mean? I am guessing it is this band's way of saying 'line up'. Do you think that could be explained in the article? J Milburn 14:16, 28 January 2007 (UTC)
replies: text: done and done!Olliegrind 14:47, 28 January 2007 (UTC)
replies: text: I removed the unsourced statement since it said in the description where the source came from "On the record sleeve..." but since you insist on a footnote I have added that as well. Olliegrind 16:00, 28 January 2007 (UTC)
thread_title: Mission Astronauts
Talk:Cyclohexanecarboxylic acid

message: This article doesn't really provide any new information. Maybe someone could add information regarding chemical properties many cyclohexanecarboxylic acids have in common? Though I don't think that would be much at all, since the groups attached to the ring would dictate most of the chemistry.
By the way: don't spill cyclohexanecarboxylic acid itself - it smells very badly, and washing your hands with anything doesn't help :(. Zsedcftgb (talk) 07:11, 17 February 2012 (UTC)
thread_title: Lacking info?
Talk:Cyclohexene

message: I agree with the first comment, the arrow pointing from the H to the H2O should point in the opposite direction, curved
arrows show the movement of electrons- from nucleophile to electrophile. If this is not corrected soon, I will fix it
myself.
Dru007 16:49, 23 May 2007 (UTC)
replies: text: Fixed. Regards, --NEUROtiker 00:04, 24 May 2007 (UTC)
thread_title: Untitled
Talk:Cycloheximide

message: The 09:18, 6 February 2008 DumZiBoT version of this article is translated into Chinese Wikipedia.--Philopp (talk) 14:59, 24 April 2008 (UTC)
thread_title:  Translation into Chinese Wikipedia 

message: According to the article NFPA 704, a 4 in the yellow part of the "diamond" means that the substance is "readily capable of detonation or explosive decomposition at normal temperatures and pressures". The article text here does not mention anything about explosivity, and neither the molecular structure nor the S-phrases suggest that cycloheximide is explosive. It seems that the NFPA 704 info was added in a semi-automated edit, so maybe something went wrong there. Could anybody confirm or correct the information? //Essin (talk) 18:40, 30 August 2008 (UTC)
thread_title:  NFPA 704
Talk:Cyclopamine

message: I am not sure if the structure is correct, particularly the stereo center at C17, between the D and E rings. Silly shrimp (talk) 02:19, 2 February 2011 (UTC)
replies: text: The program that was used for drawing the structure has a default convention of implicit hydrogens. The O on the left is OH, and the N on the right is NH. --Itub (talk) 12:21, 25 February 2008 (UTC)
replies: text: I can confirm that the structure is indeed correct. The N and O are linked by single bonds which would necessitate the presence of an H in each case.--BigBadBennyBoy (talk) 18:26, 23 June 2008 (UTC)
thread_title:  the structure 

message: The links to references 4 and 6 do not appear to be working76.72.63.2 (talk) 20:49, 12 February 2022 (UTC)
thread_title:  Reference links broken 

message: I see "Louis acid"! Oh man; good old professor Lewis will start rotating in his grave when he sees this!--FK1954 (talk) 10:47, 6 August 2023 (UTC)
thread_title:  Reaction Mechanism
Talk:Cyclopentadienyl complex

message: …and adding tags.  While the list of resources is superb, and I take no umbrage to content, the original editors or others committed to forensic work must return here and give the article further attention: there is no current connection whatsoever to the content appearing, and the resources listed. Bottom line, the content, as it stands, in unverifiable, and therefore violates WP policies regarding sourcing and verifiability. I will do what I can, but the individual with these books, that knows what material was drawn from where, must expend the effort that should have been done with the original posting.  This is an article, and not a sandbox, an encyclopedia, not a personal set of class noted.  Le Prof  Leprof 7272 (talk) 22:23, 29 May 2014 (UTC)
replies: text: Since no bracketed ref… /ref  markup language appears in the article, and the sole attempt to link text to a citation is to a book (Crabtree) with no page numbers given, I am adding a ref list construction, moving the book list to further reading, and looking to add some real references (though this will not be instantly). Patience, with these WP required changes to this unreferenced entry-level article.  Le Prof Leprof 7272 (talk) 22:31, 29 May 2014 (UTC)
thread_title:  Cleaning up citations as best I can 

message: While I am a big fan of bent metallocenes (as a grad school chum and his mentors did seminal on the theory and experiment on why certain ones are bent), the appearance of only a bent metallocene here, and of no traditional sandwich compound with ligands near to being in parallel planes—this is a curious, and possibly questionable choice (for an encyclopedia). Proposal:  Two structures, one of each "type" should appear, with the parallel first, and suitable explanation.  Comments?  Cheers.  Le Prof  Leprof 7272 (talk) 22:27, 29 May 2014 (UTC)
thread_title:  Thought needs to be given to image appearing
Talk:Cyclopentadienyliron dicarbonyl dimer

message: The lewis structure and the 3d structure don't match, is this intentional?ShiinaMikado (talk) 21:16, 8 February 2012 (UTC)
replies: text: --Smokefoot (talk) 18:03, 9 February 2012 (UTC)

text: Good point, but the equation was trying to show the terminal-bridge exchange.  How much cis isomer is there?  --Smokefoot (talk) 13:36, 6 July 2016 (UTC)
thread_title:  Strucuture questions 

message: Helquist reagent (RN  72120-26-4).  In the 32 years since it was disclosed, the reagent was cite one time by someone other than Helquist, who has mainly written reviews or revised preps for it.  As nicely explained in this article, Fp2 is a powerful source of versatile reagents, but its all shelfware basically.--Smokefoot (talk) 18:32, 11 December 2019 (UTC)
thread_title: Cyclopropanation

message: Should there not be a Iron-Iron bond in the CO bridged structures to suggest electron pairing between the two d7 iron centers?  — Preceding unsigned comment added by 2001:67C:10EC:5746:8000:0:0:1255 (talk) 09:35, 31 October 2020 (UTC)
replies: text: Please see the  section of the article, which discusses that of the three major forms, only the least-prevalent one has an Fe–Fe bond. Instead, it specifically mentions the disproving of the formerly popular idea of substantial bond of that type. DMacks (talk) 13:24, 31 October 2020 (UTC)
thread_title:  Iron Iron Bond
Talk:Cyclopentane

message: "C PENTANE" appears in large letters on the back of refrigerators in the United States. So I added this name to allow laypeople to find the correct chemical. Nick Beeson (talk) 18:30, 13 July 2021 (UTC)
thread_title:  C PENTANE 

message: This article states that Cyclopentane has "no specific use" and "in principle, it could be used as a refrigerant", however cyclopentane is currently in use as a refrigerant in household ice machines. There should be a removal of 'no specific use'. 2A02:C7E:3212:B000:50E:A1E5:C0A5:50F1 (talk) 09:59, 18 September 2022 (UTC)
replies: text: Hello, I second this. I found this page because my new freezer uses it and I was wondering what it was. 149.137.167.204 (talk) 08:58, 8 November 2022 (UTC)

text: My GE refrigerator label clearly states “Case/door insulation: cyclopentane gas” 108.18.113.12 (talk) 00:28, 17 January 2023 (UTC)
thread_title:  No Specific Use?
Talk:Cyclopropane

message: * 
*
*  
*  
--Stone (talk) 23:09, 24 March 2008 (UTC)
thread_title: References

message: I'm placing this note here as a reminder to write something when I have more time.
The article needs a section on the unique molecular orbitals of cyclopropane.  As a reference I have Modern Physical Organic Chemistry by Anslyn and Doherty, the most recent edition, page 850-852.  Let me know if you can help write this section. Crystal whacker (talk) 09:16, 3 October 2008 (UTC)
thread_title:  Molecular orbitals 

message: This is a little confusing ... I assume what is meant is only that the small pipes and tungsten wool prevent the stuff from sloshing around quickly and striking a surface with some force? Wnt (talk) 18:08, 8 January 2010 (UTC)
thread_title:  "Pipes of small diameter" to prevent "high speed collisions between molecules" ? 

message: In the list of physical constants a density is mentioned of 1.8 at 0o and 1 atm. Being a gas  (boiling at -32) I do not assume this is the density of the liquid, but for relative to air density as is rather customary for vapors, the molecule is not heavy enough. Some explanation might be needed.T.vanschaik (talk) 07:31, 23 March 2012 (UTC)
replies: text: It clearly states that the value (1.879) is in units of g/L, so that is definitely a gas not a liquid and is an absolute measure not relative to air. DMacks (talk) 08:12, 23 March 2012 (UTC)
replies: text: Close reading is a virtue, sorry.T.vanschaik (talk) 20:53, 24 March 2012 (UTC)
thread_title:  Density
Talk:Cypermethrin

message: The contents in wikipedia regarding Toxicity, Half life, effect on Human or Pets-- are completely differing from that of "http://npic.orst.edu/factsheets/cypermethrin.pdf" . Please advice which is correct.
 Anti-doting the accidental consumption by children or pets or by adults are to be informed.
gururaj1946@gmail.com
49.207.55.167 (talk) 09:58, 27 May 2017 (UTC)
thread_title:  The contents are completely differing from that of "http://npic.orst.edu/factsheets/cypermethrin.pdf" 

message: There are internet reports that it was used in riot control in Nicaragua June 2, 2018, causing several deaths. This is as yet not confirmed but I note it here for further investigation. 74.164.41.7 (talk) 19:35, 4 June 2018 (UTC)
thread_title:  So-called Masaya Massacre
Talk:Cystine

message: Is it correct to refer to Cystine as an amino acid? Isn't it an amino-acid derivative? (Being formed by two Cysteine amino acids?) Perhaps I am confused, but it would be nice to see this point clarified in the article. --Dan|(talk) 09:12, 1 July 2007 (UTC)
replies: text: This has been rectified, it is currently correctly referred to as an amino acid dimer Jebus989 (talk) 13:26, 11 January 2009 (UTC)
thread_title:  Cystine vs. Cysteine? 

message: would be nice to have the formation of the disulphide bond between the two C drawn out?  Jebus989 (talk) 13:24, 11 January 2009 (UTC)
thread_title:  Graphical represention needed? 

message: Talking about cystine you must also talk about the proteins' tertiary structure. --178.197.236.188 (talk) 16:04, 23 April 2014 (UTC)
replies: text: Solved the problem in an elegant way by adding a link. --178.197.236.188 (talk) 16:14, 23 April 2014 (UTC)
thread_title:  Content missed: Tertiary structure 

message: An IPA pronunciation guide would be nice here. Seeing that cystine and cysteine are both things that exist, I checked the cysteine page and it does have one over there. Unfortunately in my British accent I don't see how cystine could be pronounced differently, but I'm sure there must be some difference, it would be extremely impractical if there weren't. I imagine that Americans pronounce cystine to (half-)rhyme with "mine", which I assume is why there is not already an IPA guide on this page.
Anditres (talk) 18:09, 9 January 2021 (UTC)
thread_title:  Pronunciation
Talk:Cytidine diphosphate

message: — Assignment last updated by UTK443 (talk) 21:05, 1 May 2024 (UTC)
replies: text: The article has a decent introduction, and it is concise. Its content is up-to-date and relevant to the topic, but it is scarce and should be enlarged. This article does not deal with underrepresented populations/topics. The article is not biased, and it doesn't overly-emphasize any particular point since there are less than a handful in total and each is briefly discussed. There are no spelling or grammatical errors. The article includes relevant and properly-cited images that aid the reader's understanding of the topics presented. The Talk Page has only one comment, from 2007, so it is not relevant (the comment was of no significance). My overall impressions of the article are that it is well-made with no apparent mistakes or "red flags" that violate Wikipedia's standards and guidelines, but it is simply too short and lacks information that ought to be added. W1i2k3i4p5e6d (talk) 19:21, 27 April 2024 (UTC)
thread_title: Wiki Education assignment: CHEM 378
Talk:Adolf Lüderitz

message: I would like to add an external link <http://www.namibia-1on1.com/Namibia-Southern/Adolf-Luderitz.html> The article has been researched and has an 'Acknowledgement and Further Reading' link to an accrediations page on the Namibia-1on1 site showing sources of reference along with ISBN numbers where available. Are there any objections or suggestions?
Keith Irwin 14:27, 28 January 2007 (UTC)
thread_title: Untitled
Talk:William Gifford

message: Does anybody know whether his surname is pronounced with a hard (velar) g-, i. e. as in get, or with a soft (palatal) one, i. e. as in gentle?
Thank you very much.
:I can't find "Gifford" specifically, but names of English origin beginning with Gi are always, as far as I know, pronounced with a hard g. --Alan W 03:26, 29 January 2007 (UTC)
thread_title: How's it pronounced?
Talk:Amos Eaton Hall

message: I don't know when these references were added to the article, but I just went through them and most are broken or don't point to what they should anymore. The next time someone wants to add content, see if you can find a good solid source of information so we can re-source some facts in the article with a live website. -FrankTobia (talk) 12:58, 30 March 2008 (UTC)
thread_title:  References 
Talk:Carnegie Building (Troy, New York)

message: Hi,
The building is substantial concrete and masonry construction, yet the entrance in the photo is reached by a wooden stairway appearing to be temporary. Is that the main entrance? Thx, ... PeterEasthope (talk) 18:59, 3 January 2023 (UTC)
thread_title:  Entrance in photo of the building