Infrared spectra and structure of the matrix-isolated 1:1 complexes of sulfur trioxide with ammonia and the methylamines

Journal Article · Thu Apr 10 04:00:00 EST 1986 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100399a018· OSTI ID:5905411

Sass, C S; Ault, B S

The 1:1 molecular complexes between SO/sub 3/ and NH/sub 3/, pyridine, and the methylamines have been isolated and characterized in nitrogen matrices. All complexes are characterized by a red shift of the SO/sub 3/ antisymmetric stretching vibration typified by the 1354-cm/sup -1/ absorption of the SO/sub 3/.NH/sub 3/ complex. In addition, the perturbed symmetric and antisymmetric deformation modes of the coordinated NH/sub 3/ were observed, and assignment was confirmed by /sup 15/N labeling. The magnitude of the red shift of nu/sub 3/ of SO/sub 3/ increased with increasing basicity of the amine from 44 cm/sup -1/ for NH/sub 3/ to 68 cm/sup -1/ for trimethylamine. In addition, the activation of the SO/sub 3/ symmetric stretching mode was observed via lowering in symmetry. While the NH/sub 3/.SO/sub 3/ complex was very sensitive to annealing, the remaining complex studies were quite stable. 31 references, 2 figures, 3 tables.

• Research Organization: Univ. of Cincinnati, OH
• OSTI ID: 5905411
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 90:8; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ABSORPTION SPECTROSCOPY
AMINES
AMMONIA
AZINES
CHALCOGENIDES
DATA
ELEMENTS
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
INFRARED SPECTRA
ISOTOPE ENRICHED MATERIALS
ISOTOPES
LABELLING
LIGHT NUCLEI
MATERIALS
MATRIX ISOLATION
METHYLAMINE
NITROGEN
NITROGEN 15
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN ISOTOPES
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYRIDINES
SPECTRA
SPECTROSCOPY
STABLE ISOTOPES
SULFUR COMPOUNDS
SULFUR OXIDES
VIBRATIONAL STATES