Abstract
High-resolution measurements have been made on the infrared emission spectrum of the doubly substituted HCN isotopomer, H13C15N, at temperatures on the order of 1370 K. The measurements cover the region 400–850 cm−1 with a resolution (1/MOPD) of 0.006 cm−1. We could assign hot bands with upper levels up to the 0 1111 0 state. The assignments have been verified for states up to v2=5 by fitting with earlier room temperature absorption measurements of overtone and hot bands. All the measurements for H13C15N have been combined in a single least-squares fit that includes approximately 8670 rovibrational lines which have a root-mean-square deviation on the order of 0.000 33 cm−1. The spectroscopic constants for the bending states v2=1,…,11 are reported, as well as those for some combination states involving the two stretching modes.
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