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Archive:Gamma boron discovery controversy: Difference between revisions

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The first synthesis of this phase was probably performed by Wentorf in 1965,{{cn}} but the possibility of chemical contamination was not ruled out and no structure solution was given.  
The first synthesis of this phase was probably performed by Wentorf in 1965,{{cn}} but the possibility of chemical contamination was not ruled out and no structure solution was given.  


The gamma phase was synthesized again, conclusively, in 2004 by J. Chen and V.L. Solozhenko, who proved that they are dealing with a pure boron phase. The structure was solved by A.R. Oganov in 2006. Oganov, Chen, and Solozhenko published their findings in ''Nature'' in January 2009.<ref>{{cite journal| author = Oganov A.R., Chen J., Gatti C., Ma Y.-M., Yu T., Liu Z., Glass C.W., Ma Y.-Z., Kurakevych O.O., Solozhenko V.L. |title = Ionic high-pressure form of elemental boron |doi = 10.1038/nature07736 |journal = Nature |volume = 457 |year = 2009 |page = 863-867| url = http://www.sciencedaily.com/releases/2009/01/090128215130.htm}}  
The gamma phase was synthesized again, conclusively, in 2004 by J. Chen and V.L. Solozhenko, who proved that they are dealing with a pure boron phase. The structure was solved by A.R. Oganov in 2006. Oganov, Chen, and Solozhenko published their findings in ''Nature'' in January 2009.<ref>{{cite journal| author = Oganov A.R., Chen J., Gatti C., Ma Y.-M., Yu T., Liu Z., Glass C.W., Ma Y.-Z., Kurakevych O.O., Solozhenko V.L. |title = Ionic high-pressure form of elemental boron |doi = 10.1038/nature07736 |journal = Nature |volume = 457 |year = 2009 |page = 863-867| url = http://www.sciencedaily.com/releases/2009/01/090128215130.htm}}</ref>


At the same time, another group consisting of Dubrovinsky, Dubrovinskaia, and Filinchuk published their papers in other journals, initially claiming novelty of the phase (http://sites.google.com/site/gammaboron/Home/false-claims).  
At the same time, another group consisting of Dubrovinsky, Dubrovinskaia, and Filinchuk published their papers in other journals, claiming novelty.<ref> E.Yu. Zarechnaya, L. Dubrovinsky, N. Dubrovinskaia, N. Miyajima, Y. Filinchuk, D. Chernyshov, V. Dmitriev. Synthesis of an orthorhombic high pressure boron phase. Sci. Technol. Adv. Mater. 9, 044209, 4pp (2008). {{doi|10.1088/1468-6996/9/4/044209}}</ref>
 
Dubrovinsky and Dubrovinskaia knew Solozhenko's results since 2004, and Filinchuk had the entire manuscript from Oganov (they were close friends) since 9 December 2006 - see their correspondence at: http://sites.google.com/site/gammaboron/Home/filinchukmisconduct
 
Having lost the priority battle to Oganov-Chen-Solozhenko group, the Dubrovinsky-Dubrovinskaia-Filinchuk are now placing great emphasis on the likelihood that the phase might have been seen in 1965 by Wentorf (see discussion at: http://sites.google.com/site/gammaborondata/novelty) and on claiming that gamma-B is a covalent phase and not ionic (as stated in Oganov-Chen-Solozhenko paper). However, gamma-B has both ionic and covalent characters (Oganov-Chen-Solozhenko paper described it explicitly as "partially ionic" and "polar covalent", while stressing the novel and surprisingly significant ionic character in a pure element). The actual data can be found in the original papers and some additional information is at: http://sites.google.com/site/gammaborondata/novelty


== References ==
== References ==

Revision as of 18:11, 8 May 2009

There is a controversy over which group of scientists actually discovered the gamma-phase of elemental boron.

The first synthesis of this phase was probably performed by Wentorf in 1965,Template:Cn but the possibility of chemical contamination was not ruled out and no structure solution was given.

The gamma phase was synthesized again, conclusively, in 2004 by J. Chen and V.L. Solozhenko, who proved that they are dealing with a pure boron phase. The structure was solved by A.R. Oganov in 2006. Oganov, Chen, and Solozhenko published their findings in Nature in January 2009.[1]

At the same time, another group consisting of Dubrovinsky, Dubrovinskaia, and Filinchuk published their papers in other journals, claiming novelty.[2]

References

  1. ↑ Oganov A.R., Chen J., Gatti C., Ma Y.-M., Yu T., Liu Z., Glass C.W., Ma Y.-Z., Kurakevych O.O., Solozhenko V.L. (2009). "Ionic high-pressure form of elemental boron". Nature 457: 863-867. doi:10.1038/nature07736. http://www.sciencedaily.com/releases/2009/01/090128215130.htm. 
  2. ↑ E.Yu. Zarechnaya, L. Dubrovinsky, N. Dubrovinskaia, N. Miyajima, Y. Filinchuk, D. Chernyshov, V. Dmitriev. Synthesis of an orthorhombic high pressure boron phase. Sci. Technol. Adv. Mater. 9, 044209, 4pp (2008). Template:Doi
  • [High Pressure Yields Novel Single-element Boron 'Compound'], Science Daily, February 4, 2009.