High-resolution infrared study of the fundamental bands of deuteroiodoacetylene

The high-resolution infrared spectrum of deuterated iodoacetylene has been measured in the region 200-2700 cm(-1). In addition to all five fundamentals, the bands 2 nu(4)(0) and 2 nu(5)(0) have been identified. The measurements were carried out by using a Fourier transform spectrometer at room temperature with instrumental resolution of about 0.0020 cm(-1). The ground state rotational constants B-0 = 0.0970742961(72) cm(-1), D-0 = 1.38482(20) x 10(-8) cm(-1), and H-0 = -1.47(10) x 10(-15) cm(-1) have been determined bg combining 462 ground stare combination differences from the same bands mentioned above with accurate MW data from the literature. In addition, the molecular constants for all the fundamental levels have been obtained. (C) 1997 Academic Press.