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Published August 1, 1952 | public
Journal Article Open

The structure of stable pentaborane


Stable pentaborane, B5H9, is one of the boron hydrides, a short, comparatively little studied series of extraordinary compounds for which a satisfactory elementary valence theory is lacking. In 1947 we decided to undertake new electron diffraction studies of the molecular structures. The early diffraction work and most of the theoretical discussion had been too much influenced (it now seems) by unfortunate analogies to ordinary valence compounds, and it had become reasonably clear that at least the old, ethane-like structure for diborane was incorrect and that a bridge structure (I) was more likely.

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© 1952 by the National Academy of Sciences. Communicated by Linus Pauling, June 2, 1952. We should like to express our thanks to Professor Pauling for his continued helpful interest in the investigation. Gates and Crellin Laboratories of Chemistry, Contribution No. 1711. This work was supported in part by the Office of Naval Research under Contract N6-onr-24423.


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