Commons:Categories for discussion/2015/12/Category:Benzopyrene

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search
This discussion of one or several categories is now closed. Please do not make any edits to this archive.

Category:Benzopyrene

[edit]

Category:Benzo(a)pyrene would be closer to the correct name that is not possible due to technical restrictions. Leyo 23:34, 3 December 2015 (UTC)[reply]

I'm no scientist, so please excuse my ignorance, but the English wikipedia article suggests to me that Benzopyrene includes both Benzo[a]pyrene and Benzo[e]pyrene. Do we really need to separate these? - Themightyquill (talk) 12:14, 4 December 2015 (UTC)[reply]
Yes, they are constitutional isomers but different compounds. Category:Benzo(e)pyrene needs to be created as another subcategory of Category:Polycyclic aromatic hydrocarbons. --Leyo 16:51, 4 December 2015 (UTC)[reply]
Will the parent categories change? Or you'll split a category with only 22 images into two different categories, each with the same parent categories? - Themightyquill (talk) 21:27, 4 December 2015 (UTC)[reply]
The parent category of Category:Benzo(a)pyrene and Category:Benzo(e)pyrene will be Category:Polycyclic aromatic hydrocarbons. The current category name won't be needed any longer. --Leyo 22:26, 4 December 2015 (UTC)[reply]
I'm not sure if you understand my question. I understand there are different compounds of Benzopyrene. I'm suggesting that maybe they don't each need their own category. Is there any real reason they do? Why can't they all just share Category:Benzopyrene ? - Themightyquill (talk) 09:42, 5 December 2015 (UTC)[reply]
There are different benzopyrenes. As you may read, there are also benzo[b]pyrene, benzo[c]pyrene and benzo[d]pyrene. The creator of the category clearly intended to have it for benzo[a]pyrene only. He just couldn't use this name for technical reasons. Among others, it's useful to have compound-specific categories, e.g. to be linked from Wikidata and Wikipedia. --Leyo 14:42, 5 December 2015 (UTC)[reply]
 Agree with Leyo's point of view. --Achim (talk) 20:00, 6 December 2015 (UTC)[reply]
I wouldn't say I have a point of view, I'm just asking questions. @Leyo: To be clear, we'll just create Category:Benzo(c)pyrene and Category:Benzo(d)pyrene categories as well when the need arises? (From what I see, we have no such images at the moment.) Also, where will the English wikipedia article en:Benzopyrene and other equivalent articles in other languages link on commons? Might it be useful to rename this Category:Benzopyerenes and create subcategories? - Themightyquill (talk) 07:53, 7 December 2015 (UTC)[reply]
In brief, see d:Q306051 and d:Q2645019. --Leyo 12:46, 7 December 2015 (UTC)[reply]
Yes, but that wasn't my question, was it? See d:Q1501961. - Themightyquill (talk) 15:46, 7 December 2015 (UTC)[reply]
Support subcats for each specific compound...break up a general name with lots of files that have all sorts of different names to help find each. But support retaining a parent cat for this class (Category:Benzopyrene). I ordinarily don't like overly deep cat trees when there are so few sibling cats, but in this case, the string "Benzopyrene" doesn't appear in the specific chemicals' names. Having a cat that does contain that string makes it easier to use search tools to discover what we have on the topic. It gives a natural place to accumulate images for the other variations in a way that they can be found if editors don't know to create a new cat or don't think one is justified if we only have one image of it. But given that the parent cat is a class that contains several members, should it instead be Category:Benzopyrenes? DMacks (talk) 22:49, 7 December 2015 (UTC)[reply]
I'm having trouble finding actual information about the [b], [c], and [d] isomers. @Leyo: , are you able to access the actual refs cited by that report you linked? I can't find them by name in SciFinder. Based on File:Pyrene numbered.png, [a] and [b] would be equivalent. Drawing the [c] and [d] forms, which have the fifth ring spiro, I don't really have a "benzo", and SciFinder gives me no hits for it as a core structure either. DMacks (talk) 23:12, 7 December 2015 (UTC)[reply]
Unfortunately, I don't have access to the original literature. Among them, there are two papers (DOI:10.1111/j.1600-0668.1991.00015.x and DOI:10.1007/BF00194673) and a book written in German (ISBN 3883142867). --Leyo 00:14, 8 December 2015 (UTC)[reply]
Retrieved from "https://commons.wikimedia.org/w/index.php?title=Commons:Categories_for_discussion/2015/12/Category:Benzopyrene&oldid=303772381"