title: Infrared spectrum of solid isocyanic acid (HNCO): vibrational assignments and integrated band intensities.
abstract: Infrared spectra of thin films of solid HNCO condensed from the gas phase are characterized in terms of their vibrational frequencies, mode assignments, and integrated band intensities at low temperatures ( approximately 20-145 K). Isocyanic acid is shown to react with water (H2O) and ammonia (NH3) even at low temperatures; consequently, it may be an important species in the chemistry of interstellar ices and comets.
authors.affiliation: Department of Chemistry and Biochemistry, University of Maryland, College Park 20742, USA.
authors.forename: M S
authors.initials: MS
authors.lastname: Lowenthal
authors.forename: R K
authors.initials: RK
authors.lastname: Khanna
authors.forename: Marla H
authors.initials: MH
authors.lastname: Moore
mesh_terms: D000641:Ammonia / Q000737:chemistry; D003485:Cyanates / Q000737:chemistry*; D013055:Spectrophotometry, Infrared / Q000379:methods*; D013696:Temperature; D013816:Thermodynamics; D014867:Water / Q000737:chemistry
chemical_list: D003485:Cyanates; D014867:Water; D000641:Ammonia; C005057:isocyanic acid