Talk:9-Borabicyclo(3.3.1)nonane
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Pyrophoric?
[edit]Can someone supply a reference indicating pure 9-BBN is pyrophoric? As far as I know, when properly prepared it is air stable for extended periods even at room temperature. (I have even uploaded a photo for the article showing 9-BBN that I made, resting stably on weighing paper in the open air.) shultzc (talk) 23:10, 17 January 2009 (UTC)
- the BASF brochure says the compound can easily combust. Did your sample blow up already? :-). Do not rely on Wikipedia for chemical safety information! V8rik (talk) 21:41, 18 January 2009 (UTC)
- (I would never rely on Wikipedia for chemical safety information.) According to the prep that I followed [Org. Syn. Coll. Vol. 9, p.95 (1998)], "the 9-BBN dimer so prepared is reasonably air-stable so that exposure to the atmosphere for 1 month lowered the mp to ca. 146–151°C." I seem to recall one of H. C. Brown's original papers on the compound indicating that its stability is dependent on preparatory method (which I would presume has to do with purity - perhaps impurities catalyze the oxidation?). shultzc (talk) 06:23, 19 January 2009 (UTC)
Dimer vs. monomer?
[edit]Does the monomer exist in "normal" conditions? I took a look at the interwikis and they are showing the monomer. Which I suspect does not exist in these "normal" conditions. --Rifleman 82 (talk) 16:59, 17 August 2009 (UTC)
- I am no super-expert, but it always is presented as the dimer in my sources. It is described in Inorg Syn by Koester, I think.--Smokefoot (talk) 22:37, 17 August 2009 (UTC)
- In solution and as crystalline solid it is a dimer, according to the German chemical encyclopedia Römmp[1] --Firsthuman (talk) 15:56, 6 October 2009 (UTC)