HIGH RESOLUTION LASER SPECTROSCOPY OF CALCIUM ACETYLIDE (CaCCH)

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1987

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Ohio State University

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The calcium acetylide molecute was synthesised in the gas phase by the reaction at calcium vapor with acetylene, Laser-induced iluorescence was used to rotationally analyse the $\bar{A}^{2}\Pi-\bar{x}^{2}\Sigma^{+}$ transition of the CaCCH molecule. This molecule proved to be ionic in nature $(Ca^{+-}CCH)$ and linear in geometry. The low resolution analysis and the A-doubling constant of the CaCCH molecule indicate that the $\bar{B}^{2}\Sigma^{+}$ state is either distant from the $A^{2}\Pi$ State or dissociative. The molecular parameters of this molecule were determined from the analysis and will be discussed.

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Author Institution: Department of Chemistry, University of Arizona 85721

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