MATTHEW P. BUCCHINO, Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721; JUSTIN P. YOUNG, Department of Chemistry, Canisius College, Buffalo, New York 14208; PHIL M. SHERIDAN, Department of Chemistry, Canisius College, Buffalo, New York 14208; AND LUCY M. ZIURYS, Department of Chemistry and Biochemistry, Department of Astronomy, and Steward Observatory, University of Arizona, Tucson, Arizona 85721.
Millimeter-wave direct absorption techniques were used to record the pure rotational spectrum of IZnCH3 (X1A1). This species was produced by the reaction of zinc vapor with ICH3 in the presence of a DC discharge. Rotational transitions ranging from J = 109 108 to J = 122 121 were recorded for I64ZnCH3 and I66ZnCH3 in the frequency range of 250-290 GHz. The Ka = 0-4 components were measured for each transition, with the K-ladder structure and nuclear spin statistics indicative of a symmetric top. As with HZnCH3 (X1A1), the detection of IZnCH3 provides further evidence for a zinc insertion process.