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A fact fromMercury(IV) fluoride appeared on Wikipedia'sMain Page in theDid you know column on 18 November 2007. The text of the entry was as follows: Did you know... thatmercury(IV) fluoride(model pictured), the firstmercury compound ever to have anoxidation state of 4, was synthesized at 4 degrees aboveabsolute zero? A record of the entry may be seen atWikipedia:Recent additions/2007/November.

Is there any direct experimental evidence at all that the molecule is planar and not tetrahedral? The cited review of Wanget al states there is no structural data for HgF₄.76.212.128.2 (talk)05:27, 8 December 2010 (UTC)[reply]

Since HgF₄ is highly unstable - even more unstable than the strongest known oxidant KrF₂ - is it possible that it is an even stronger oxidant? Or is it just unstable due to entropic reasons? --79.243.250.21 (talk)20:04, 8 September 2013 (UTC)[reply]

http://pubs.rsc.org/en/Content/ArticleLanding/2008/CP/b805608k#!divAbstractDouble sharp (talk)02:18, 10 October 2016 (UTC)[reply]

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