Talk:Diborane

message: We could really use a picture of the borane dimer. DS 16:44, 19 September 2005 (UTC)
thread_title:  Image? 

message: Is this Aluminium Hydride?  If so it should link to that article.Dajwilkinson 23:53, 15 May 2007 (UTC)
thread_title:  Alumane? 

message: I have added the name of the undergraduate student. H. Christopher Longuet-Higgins went on to great things as a theoretical chemist and was a member of the International Academy of Quantum Molecular Science. He then changed fields completely to Artificial Intelligence. I will write on article on him sometime but the two fields make it difficult. I'm working through the redlinks on International Academy of Quantum Molecular Science. Of course, if anyone else wants to write it, please go right ahead. --Bduke 00:58, 19 June 2006 (UTC)
thread_title: H. Christopher Longuet-Higgins

message: I would like to know how Hydrogen form one electron covalent bond?  —Preceding unsigned comment added by 148.168.40.4 (talk) 12:14, 20 February 2009 (UTC)
thread_title:  Bonds in Diborane 

message: I removed the following dubious sentence from the section "Structure and bonding":
:The structure is isoelectronic with C2H62+, which would arise from the diprotonation of the planar molecule ethene.
First of all, the formula for ethene is C2H4, and deprotonation means removal of hydrogen, which would result in an anion, not a cation, as well as having less than 4 hydrogens. That is to say, either C2H3-, or C2H22-. This is completely inconsistent with the claimed cationic formula C2H62+. Going the other way, protonating ethene would give either C2H5+ or C2H62+. The latter matches the formula claimed, however, I have never heard of protonation involving the insertion of a hydrogen into a covalent sigma bond between two carbon atoms. Even if the unstable species C2H5+ could be further protonated, I highly doubt it would result in something isoelectronic with diborane.
The only way I can see a carbon equivalent of diborane forming is via the dimerisation of the carbocation CH3+, which is unfortunately an extremely unstable carbocation that is very unlikely to exist long enough to dimerise with another instance of itself.—Tetracube (talk) 22:29, 9 March 2009 (UTC)
replies: text: You misread and then misconcluded, but we are all reading too fast these days, so no big deal. The item you find objectionable said diprotonation, not deprotonation.  And C2H62+ would be isoelectronic with diborane.  The question is whether this dication would be isostructural.  Deprotonation does not mean removal of hydrogen, the term refers to removal of protons.--Smokefoot (talk) 23:07, 9 March 2009 (UTC)
replies: text: Mea culpa. So it did mean protonation (and on that note, I meant "removal of H+", which is equivalent to removing a proton, when I referred to deprotonation. Talk about reading/writing too fast. :-)). I still think it's a dubious claim, though. Would protonating C2H5+ break the C-C sigma bond, as would be necessary for the resulting dication to be isoelectric with diborane? I highly doubt it.—Tetracube (talk) 23:28, 9 March 2009 (UTC)
replies: text: "Would protonating C2H5+ break the C-C sigma bond" Wha? Who said protons break bonds?  Diborane enjoys a nice bond with its fellow boron .. At least if one believe the MO's.--Smokefoot (talk) 02:22, 10 March 2009 (UTC)
replies: text: OK, maybe I'm still stuck in the old-school mindset... I was thinking of the mechanism of adding a proton to the species C2H5+, which I assume has a sigma bond between the two carbon atoms. The only way to get something isoelectronic with diborane with this process is if the new proton gets inserted between the carbon atoms. But what do I know, maybe from the MO perspective all of this is just trappings from an obsolete theory that has no real basis in reality.—Tetracube (talk) 17:12, 10 March 2009 (UTC)
thread_title:  Dubious claim 

message: The only reference I can find has different B-H bond lengths from the ones in our pretty picture. Has anyone got a reference for the bond lengths we use? Axiosaurus (talk) 12:12, 28 September 2013 (UTC)
replies: text: Consensus is emerging at Wikipedia talk:WikiProject Chemistry to revert and rethink the borane articles. At least that is my guess because we dont want the readership being tricked into thinking that BH3 is a major reagent or actor in much chemistry, so it would be discussed within a great context.  But that is only my guess the way this article development would go.  The B-H distance of the monomer is however useful.  In general I think that we need a structural report for as articles on chemical compounds.--Smokefoot (talk) 14:42, 28 September 2013 (UTC)
thread_title:  Bond angles and bond lengths 

message: Substituted at 13:22, 29 April 2016 (UTC)
thread_title: Assessment comment

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thread_title:  External links modified 

message: How can diborane have a repulsively sweet odor, and, as of an edit today, be toxic?  Pyrophoric indeed it is.  Some decades ago when with my BB gun I shot a glass ampule containing 1 cc of diborane straight off the vacuum line, it exploded with a loud, sharp, instantaneous crack on contact with air, so no way to smell it or test toxicity, and I made sure I was not downwind.  Are we talking about the smell and toxicity of combustion products?
Jslipscomb (talk) 17:19, 8 June 2022 (UTC)
thread_title: Sweet odor and toxic?  Diborane explodes on contact with air.