Infrared Photoacoustic Spectra of the Solid Manganese(I) Carbonyl Halides, Mn(CO)5X and [Mn(CO)4X]2 (X = Cl, Br, I)

Abstract

Mid- and near-IR photoacoustic (PA) spectra have been measured at room temperature for two series of crystalline manganese(I) carbonyl halides: Mn(CO)5 X and [Mn(CO)4 X]2 ( X = Cl, Br, I). Vibrational assignments are proposed for many of the observed bands. The PA spectra in the near-IR region (4200-3800 cm−1), where the binvary v(CO) overtones and combinations absorb, are useful spectral fingerprints for these organomanganese(I) complexes.