Talk:Chromium hexacarbonyl

July 18 revision of article

I contracted the article and in discarded some seemingly marginal content. I realizing that removal of content is a discouraged in WE, but the previous article was, IMHO, a collection of misleading factoids and remembrances that obscured its core message. There remain some archane aspects such as the reference (from the originating stub) to a non-prominent researcher in London. And the connection to the Aberdeen chemist seems misplaced. If I stepped over the line in my edits, please let me know or make appropriate adjustments or recommendations. The article would benefit from an organometallic pro with more time than I have.--Smokefoot 02:39, 19 July 2006 (UTC)

Your edits seem fine to me. Sometimes removing cruft is just as important as adding new content. Keep up the good work! —Keenan Pepper 03:09, 19 July 2006 (UTC)

Zerovalent?

If there are six ligands, how is Cr zerovalent and not hexavalent? I don't know much about this sort of chemistry. Hellbus (talk) 02:27, 15 July 2010 (UTC)

Good question. I am no expert on the original meaning, but in present day inorganic/organometallic jargon, "valence" is synonymous with oxidation state, such that CrCl₃(H₂O)₃ is called trivalent, and CrO₄^2- is a representative hexavalent chromium compound. I think that at one time, valence referred to the number of ligands attached to the central atom as indicated by the formula. In the former times, anhydrous chromium trichloride (CrCl₃) was thought to feature three-coordinate ("trivalent") Cr, whereas today we know that CrCl₃ is a polymer consisting of chromium(III), each surrounded by six doubly bridging chloride ligands. It is considered trivalent.--Smokefoot (talk) 03:02, 15 July 2010 (UTC)

MSDS link dead

The site linked no longer maintains the information. I found a MSDS for it at https://www.fishersci.com/store/msds?partNumber=AC221050500&productDescription=CHROMIUM+HEXACARBONYL+9+50GRC&vendorId=VN00032119&countryCode=US&language=en but I don't know if it's acceptable to put here.Loren Pechtel (talk) 20:14, 9 January 2022 (UTC)

Wiki Education assignment: Organometallics

This article was the subject of a Wiki Education Foundation-supported course assignment, between 6 February 2023 and 24 March 2023. Further details are available on the course page. Student editor(s): Lemontreess (article contribs).

— Assignment last updated by Lemontreess (talk) 16:41, 23 March 2023 (UTC)