:Talk:Octadecaborane

The Olsen-1968 ref talks about two geometric isomers identified as "n" and "i", but the Londesborough-2012 ref talks about "syn" and "anti" isomers. From their diagrams and descriptions, these seem like the same pair of isomers. Borane chemistry isn't my specialty, so I don't know if there is some other difference I'm not seeing, or if terminology for this class was changed in in the intervening years. DMacks (talk) 20:27, 30 June 2014 (UTC)

:Olsen mentions that the two have been "characterized by X-ray diffraction studies", citing:

:* {{ cite journal | author = Simpson, P. G.; Lipscomb, W. N. | title = Molecular Structure of B₁₈H₂₂ | journal = Proceedings of the National Academy of Sciences of the United States of America | year = 1962 | volume = 48 | issue = 9 | pages = 1490–1491 | pmid = 16590990 | pmc = 220984 | url = http://www.pnas.org/content/48/9/1490.full.pdf }}

:* {{cite journal |title= Molecular, Crystal, and Valence Structures of Iso‐B₁₈H₂₂ |first1= Paul G. |last1= Simpson |first2= Kirsten |last2= Folting |first3= Robert D. |last3= Dobrott |first4= William N. |last4= Lipscomb |journal= J. Chem. Phys. |volume= 39 |issue= 9 |pages= 2339–2348 |year= 1963 |doi= 10.1063/1.1701439 }}

:and

:* {{cite journal |title= The Molecular Structure of i-B₁₈H₂₂ |first1= Paul G. |last1= Simpson |first2= Kirsten |last2= Folting |first3= William N. |last3= Lipscomb |journal= J. Am. Chem. Soc. |year= 1963 |volume= 85 |issue= 12 |pages= 1879–1880 |doi= 10.1021/ja00895a046 }}

:* {{cite journal |title= Molecular, Crystal, and Valence Structures of B₁₈H₂₂ |first1= Paul G. |last1= Simpson |first2= William N. |last2= Lipscomb |journal= J. Chem. Phys. |volume= 39 |issue= 1 |pages =26–34 |year= 1963 |doi= 10.1063/1.1734029 }}

:That doi:10.1021/ja00895a046 has nice perspective diagrams comparing them. DMacks (talk) 16:22, 2 July 2014 (UTC)