Commons:WikiProject Chemistry/Deletion requests

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This deletion debate is now closed. Please do not make any edits to this archive. You can read the deletion policy or ask a question at the Village pump. If the circumstances surrounding this file have changed in a notable manner, you may re-nominate this file or ask for it to be undeleted.

File:Methylphenidate.png[edit]

Does not meet style guidelines. Has been superseded. (Racemic) notation should be made redundant with correct drawing. Testem (talk) 08:13, 25 October 2013 (UTC)

Pictogram voting comment.svg Comment The file is used 6 times in 5 wikis and must be substituted at first. Taivo (talk) 08:40, 30 October 2013 (UTC)

Kept: . .     Jim . . . . (Jameslwoodward) (talk to me) 10:56, 1 November 2013 (UTC)

File:Methylphenidate.png[edit]

Stereochemical mistakes. There are *2* chiral centers, only one of which is indicated; the "racemic" would be opposite of both, but this diagram suggests only the one marked would switch (that would be diastereomer) or that the other one is ambiguous (but the title compound is not a diastereomeric mixture). Needs to be replaced on wikibooks with something from Category:Methylphenidate before deletion (I can't edit there easily). DMacks (talk) 16:06, 13 July 2014 (UTC)

File:Dextromethylphenidate.svg[edit]

Ambiguous stereochemistry. There are two marked "*" but only one has a clear wedge notation (IUPAC forbids using this bondtype to join two stereocenters!) Have Category:Methylphenidate with specific-stereo and generic structures of possible replacements DMacks (talk) 15:50, 13 July 2014 (UTC)

File:Malonic acid.png[edit]

superseeded by File:Malonsäure.svg Kopiersperre (talk) 13:22, 13 July 2014 (UTC)

File:Malonilo.png[edit]

superseeded by File:Malonsäure.svg Kopiersperre (talk) 13:12, 13 July 2014 (UTC)

File:Metan Uzay-dolgu Modeli.gif[edit]

This image is equivalent to File:Methane-3D-space-filling.svg —Preceding unsigned comment added by Daniele Pugliesi (talk • contribs) 2014-07-12T19:23:25‎ (UTC)

File:Methanespacefillingmodel.svg[edit]

This image is equivalent to File:ModeleMoleculaire-CH4.png —Preceding unsigned comment added by Daniele Pugliesi (talk • contribs) 2014-07-12T19:28:26‎ (UTC)

  • Symbol delete vote.svg Delete Poor quality. --Leyo 09:24, 13 July 2014 (UTC)

File:Metan Top-cubuk modeli.gif[edit]

This image is equivalent to File:Methane-CRC-MW-3D-balls.png —Preceding unsigned comment added by Daniele Pugliesi (talk • contribs) 2014-07-12T19:29:51‎ (UTC)

File:Methane-model-flat.svg[edit]

This image is equivalent to File:Methan Lewis.svg —Preceding unsigned comment added by Daniele Pugliesi (talk • contribs) 2014-07-12 19:35:20‎ (UTC)

  • Symbol delete vote.svg Delete after having it replaced globally. --Leyo 09:27, 13 July 2014 (UTC)

File:Methane-CRC-MW-3D-vdW.png[edit]

This image is equivalent to File:Methane-3D-space-filling.svg —Preceding unsigned comment added by Daniele Pugliesi (talk • contribs) 2014-07-12T19:25:14‎ (UTC)

File:Methane-2D-flat-small.png[edit]

This image is equivalent to File:Methane-2D-square.png —Preceding unsigned comment added by Daniele Pugliesi (talk • contribs) 2014-07-12T19:37:23‎ (UTC)

File:2-methylbut-1-ene.gif[edit]

Poor quality, better alternatives in Category:Pentenes. Leyo 09:11, 13 July 2014 (UTC)

File:Prop-1-ene.gif[edit]

Poor quality, many better alternatives in Category:Propylene. Leyo 09:10, 13 July 2014 (UTC)

File:N-amylene.jpg[edit]

Poor quality, many better alternatives in Category:Pentenes. Leyo 09:05, 13 July 2014 (UTC)

File:2-methylpropane.gif[edit]

Poor quality, many better alternatives in Category:Isobutane. Leyo 08:54, 13 July 2014 (UTC)

File:Geom vzorec methan.PNG[edit]

This image is equivalent to File:Methan Keilstrich.svg —Preceding unsigned comment added by Daniele Pugliesi (talk • contribs) 2014-07-12T19:33:49‎ (UTC)

File:Arbutin.svg[edit]

This undescribed, unsourced and lacking author image has a nearly exact duplicate with all fields correctly filled, see File:Arbutin structure.svg. No need to keep this extra one when the other one is complete. Ellin Beltz (talk) 18:34, 12 July 2014 (UTC)

File:Bupropion 1.svg[edit]

superseeded by File:Bupropion skeletal.svg Kopiersperre (talk) 15:58, 12 July 2014 (UTC)

File:Vonrichter.png[edit]

Claimed as being incorrect, orphaned. Leyo 23:17, 10 July 2014 (UTC)

  • Whichever way this discussion goes, the vector version, File:Vonrichter.svg, should share the same fate. Ed (Edgar181) 14:01, 12 July 2014 (UTC)

Orphaned files uploaded by Stolze Rose[edit]

These {{badJPG}} and incorrectly displaying SVG files are orphaned, i.e. have been replaced by the same user, see Special:ListFiles/Stolze Rose.

Leyo 08:51, 9 July 2014 (UTC)

File:Isohumulone Reaktion.jpg[edit]

{{badJPG}}, replaced by File:Reaktionsmechanismus der Isohumulonbildung.png by the uploader. Leyo 21:53, 7 July 2014 (UTC)

  • Symbol delete vote.svg Delete: Per nom and superseded by the PNG. --Amitie 10g (talk) 22:35, 7 July 2014 (UTC)

File:Lösemittel in Druckfarben.png[edit]

Weird angles, may be replaced by a gallery of images for the individual compounds if need be. Leyo 21:29, 6 July 2014 (UTC)

File:Propamocarb hydrochloride.png[edit]

superseeded by File:Propamocarb.svg respectively File:Propamocarbhydrochloride.png --Kopiersperre (talk) 21:10, 6 July 2014 (UTC)

File:Propamocarb.gif[edit]

superseeded by File:Propamocarb.svg respectively File:Propamocarbhydrochloride.png Kopiersperre (talk) 21:09, 6 July 2014 (UTC)

File:Pyrimidine.PNG[edit]

superseeded by File:Pyrimidin.svg Kopiersperre (talk) 21:01, 6 July 2014 (UTC)

File:Amine tertiaire.gif[edit]

Poor quality, replaced by File:Amine-2D-general.svg and other files in the same category. Leyo 20:49, 6 July 2014 (UTC)

File:Methane.gif[edit]

Really poor quality, many better alternatives in Category:Chemical structure of methane. Leyo 20:43, 6 July 2014 (UTC)

File:Cetone.gif[edit]

Poor quality, replaced by File:Ketone-general.png and several other images in the same category. Leyo 20:41, 6 July 2014 (UTC)

File:Epoxiconazole.png[edit]

obsoleted by File:Epoxiconazole.svg Kopiersperre (talk) 19:13, 6 July 2014 (UTC)

File:Pencycuron.png[edit]

obsoleted by File:Pencycuron.svg Kopiersperre (talk) 19:10, 6 July 2014 (UTC)

File:Diethofencarb.png[edit]

obsoleted by File:Diethofencarb structuur.svg Kopiersperre (talk) 19:08, 6 July 2014 (UTC)

File:Metrafenone.png[edit]

obsoleted by File:Metrafenone.svg Kopiersperre (talk) 19:06, 6 July 2014 (UTC)

File:Bixafen.png[edit]

obsolete by File:Bixafen structure.svg Kopiersperre (talk) 19:05, 6 July 2014 (UTC)

Files uploaded by JackPotte (contribs · uploads)[edit]

Poor quality ({{badGIF}}, low resolution), orphaned/better alternatives available on Commons.

--Leyo 18:16, 6 July 2014 (UTC)

This deletion debate is now closed. Please do not make any edits to this archive. You can read the deletion policy or ask a question at the Village pump. If the circumstances surrounding this file have changed in a notable manner, you may re-nominate this file or ask for it to be undeleted.

File:Métabolisme-Image072constituants.gif[edit]

Poor quality, orphaned, many better alternatives in Category:Glycerol. Leyo 18:05, 6 July 2014 (UTC)

Symbol delete vote.svg Delete It was initially created for this wikibook, but finally its author didn't use it. JackPotte (talk) 18:16, 6 July 2014 (UTC)

Deleted: Steinsplitter (talk) 15:34, 13 July 2014 (UTC)

File:Patent Blue V.png[edit]

low resolution raster image, superseeded by File:Patent blue V.svg Kopiersperre (talk) 01:06, 4 July 2014 (UTC)

  • Symbol keep vote.svg Keep These are two different forms of the organic structure (probably pH dependent, and en:Patent Blue V explicitly discusses the effect of pH on this chemical). The nom'ed image is indeed low quality, but it's the one that is closer to what is described as the title compound in the en.wp article. But neither image might be really "correct"...please visit en:Talk:Patent Blue V to help figure out what structure(s) should be represented. DMacks (talk) 02:56, 4 July 2014 (UTC)
    • Pictogram voting comment.svg Comment My previous comment was based on the original nom, which asserted File:Patentblau V.svg as the replacement. Nominator changed the nom, without comment, after the discussion was already running. Quite disruptive!, User:Kopiersperre! DMacks (talk) 11:49, 8 July 2014 (UTC)
  • Symbol keep vote.svg Keep, until we vectorize this raster to make them exactly that this version. --Amitie 10g (talk) 23:35, 4 July 2014 (UTC)

This is quite similar--Kopiersperre (talk) 11:44, 5 July 2014 (UTC)

  • Symbol delete vote.svg Delete now that we have a higher-quality replacement of the exact same protonation state (File:Patent blue V.svg). I adjusted the <gallery> to have the filenames visible for easier discussion. DMacks (talk) 11:40, 8 July 2014 (UTC)

Categories for discussion[edit]

Category:N,N-disubstitued primary amides[edit]

Doesn't a "primary amide" has two H on the N by definition of primary and if it's N,N-disubstituted (note mis-spelling also), it would be a tertiary amide instead? (See en:IUPAC nomenclature of organic chemistry#Amines and Amides and en:Amide). It was formerly Category:Tertiary amides and renamed without discussion or comment; I'm proposing it be put back. Also bundling with this:

For same nomenclature and spelling problems. DMacks (talk) 18:40, 16 July 2013 (UTC)

No, no and no. A secondary amide is an amide with two carbonyl groups on the nitrogen. Same principle for the tertiary. This is the IUPAC nomeclature [1]. Rhadamante (talk) 22:28, 16 July 2013 (UTC)
Ah great, thanks for checking an authoritative ref. But that's a bunch of textbooks that need to be corrected to match the spec instead of common usage. First general/organic/biochem undergrad on my desk and online MCAT prep-flashcards get it wrong, along with common use in ACS literature:( So we're down to just a spelling error and some wikipedia articles to fix? DMacks (talk) 02:16, 17 July 2013 (UTC)
I guess so... To be honest, I was also surprised the fist time I saw that, when it was "fixed" 5 years ago on fr: ([2], with the non-questionable reference... But since then I try to correct this mistake propagated everywhere... Rhadamante (talk) 04:33, 17 July 2013 (UTC)
Looking at that ref and [3], are Category:Imides and Category:Secondary amides actually synonymous? DMacks (talk) 15:02, 18 July 2013 (UTC)
Nomenclature and traditions are not that clear on this. Certain people consider yes, the two terms are synonyms, and for a while category Category:Secondary amides was a redirection to Category:Imides. Other restrain the name "imide" to cyclic secondary amides. We have finally chosen the second option on fr:, but there is no absolute consensus on this. Rhadamante (talk) 17:44, 19 July 2013 (UTC)
This is a case where IUPAC nomenclature and common usage differ. Personally, I think we should stick with what most chemists and know and learn. Having worked for ~20 years with chemists from N. America, Europe and Asia I have never encountered anyone who doesn't define primary amide as RCONH2, secondary amide as RCONHR, and tertiary amide as RCONRR. The purpose of Commons is to serve the user and we shouldn't let nomenclature pedantry get in the way of that. With respect to amides, our current method of categorization makes it harder for people to find the images they are looking for. I don't think it is a "mistake" to categorize amides the way that most chemists categorize amides just because IUPAC has a different and unusual way of defining them. Ed (Edgar181) 10:48, 22 July 2013 (UTC)
I strongly disagree with this. IUPAC defines the nomenclature, we're not here to judge what we decide to apply or not. Rhadamante (talk) 05:40, 23 July 2013 (UTC)
But that is not the case at all. It is entirely untrue. We decide all the time which IUPAC rules we will use and which ones we will not. Articles and categories are titled by common names all over Wikipedia and Commons. Why do we have w:en:Cocaine, w:fr:Catégorie:Cocaïne, Cocaine, Category:Cocaine, w:de:Kokain, etc. but no article or category titled methyl (1R,2R,3S,5S)-3-(benzoyloxy)-8-methyl-8-azabicyclo[3.2.1]octan-2-carboxylate? When it suits our needs we routinely ignore IUPAC nomenclature rules and and go with common nomenclature. Why shouldn't we do so in this case? Ed (Edgar181) 13:44, 23 July 2013 (UTC)
First there is a difference between names, that have synonyms that could be more often employed than the systematic name, and the classification of function that should be unique, and rule by IUPAC. Secondly, I'm not even sure "(1R,2R,3S,5S)-3-(benzoyloxy)-8-methyl-8-azabicyclo[3.2.1]octan-2-carboxylate" is the IUPAC name for cocaine. It's for sure the systematic name, but IUAPC sometimes also decides to use more common terms to design some very famous chemical substance, for example acetic acid, which is IUAPC name, vs etahnoic acid, the systematic name. Rhadamante (talk) 21:08, 23 July 2013 (UTC)

More to the point, it's "substituted", not "substitued". DS (talk) 13:36, 25 June 2014 (UTC)

Exact. My mistake. Regardless the current dispute, these categories should be renamed with the correct term, "substituted". Rhadamante (talk) 15:20, 25 June 2014 (UTC)
I have placed a request at User:CommonsDelinker/commands to have the bot rename the three categories. Ed (Edgar181) 18:47, 25 June 2014 (UTC)


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