Near Infrared Spectra of Diborane, Pentaborane, and Decaborane

Abstract
Spectra of diborane, pentaborane, and decaborane have been examined in the near ir at high resolution. Assignment of the observed frequencies for diborane have been made. Pentaborane has been subjected to group theoretical reduction considerations to ascertain which overtone frequencies are ir active for this molecule. On the basis of the data obtained, bond energies, bond distances, and force constants have been calculated for the B–H bond in each of these molecules. Spectral structure comparisons of diborane, ethane, and ethylene have been made.

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