Talk:Iron(II) fluoride

Color

The main text says that FeF₂ is a "green crystalline solid," with a colorless tetrahydrate, whereas the infobox says it's a "red-violet transparent crystal." I think one would have to be color-blind to reconcile the two descriptions. I know of inorganic compounds that change color when hydrated or not, or due to fluorescence, but this doesn't seem to explain the discrepancy in this particular case. Which description is right? A brief Google search didn't shed any light upon this subject. It did show, though, that ferrous salts are usually green, as are nickel ones, and nickel (II) fluoride is green. So, I'm more tempted to believe the main text description, but can anyone confirm the color of ferrous fluoride? --UrsoBR (talk) 02:33, 12 November 2013 (UTC)

The "green" may have been a blid guess from the pale green color of the solution, and "red-violet" may have been vandalism. All references I have seen say that both the solid anhydrous and tetrahydrate are white (colorless). Fixed. --Jorge Stolfi (talk) 13:06, 13 November 2016 (UTC)

That was my conclusion. High spin ferrous would be expected to be that way. The other thing that I learned is that a lot of work has been reported on the anhydrous (>1000 hits in SciFinder), but almost nothing on the hydrate. The usual problem with hydrated fluorides is that they are contaminated with isostructural hydroxides. If you can find a color for Cr(OH)₃, please edit chromium(III) hydroxide.--Smokefoot (talk) 13:46, 13 November 2016 (UTC)

External links modified

Hello fellow Wikipedians,

I have just modified one external link on Iron(II) fluoride. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

• Added archive https://web.archive.org/web/20060116134617/http://www.npi.gov.au/database/substance-info/profiles/44.html to http://www.npi.gov.au/database/substance-info/profiles/44.html

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 18 January 2022).

• If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
• If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 22:25, 14 April 2017 (UTC)