THE ULTRAVIOLET SPECTRUM OF METHINO PHOSPHIDE (HCP)
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Date
1964
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Ohio State University
Abstract
The ultraviolet spectrum of HCP consists of a large number of bands in the region extending from about $3000 {\AA}$ to shorter wavelengths. Most of the bands can be accounted for in terms of one electronic transition with a 0-0 band at $34,774 cm^{-1} (2875 {\AA})$, but there is evidence of at least one other weaker system at shorter wavelengths. Rotational analysis of the band at $34,774 cm^{-1}$, together with its associated ``hot'' bands, shows that the upper state is bent and of A symmetry. However, as the bending vibration of this state is progressively excited the molecule behaves more and more as if it were linear. It is thought that HCP in this state may represent an example of a ``quasi linear'' molecule.
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Author Institution: Division of Pure Physics, National Research Council