Laboratory Astrochemistry in the Infrared: High-Resolution Spectroscopy and Molecular Structure of Carbon-Silicon Clusters

¹ I. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany

Abstract

A new high-resolution infrared spectrometer using an optical parametric oscillator working at 5 μm as radiaton source has been assembled in the Cologne laboratory and is now operated routinely. As one of the first projects, we have reobserved the ν₃ vibrational fundamental (asymmetric C-C stretching mode) of Si₂C₃ located at 1968.2 cm^-1.