Infrared studies of matrix-isolated and neat solid nitrosyl chloride

Journal Article · Thu Jan 10 00:00:00 EST 1991 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100154a020· OSTI ID:5852754

Jones, L H; Swanson, B I ^[1]

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1. Los Alamos National Lab., NM (USA)

The infrared spectra of nitrosyl chloride (ONCl) isolated in rare gas solids have been studied in an attempt to verify the existence of a dimer. The results indicate that with increased concentration and with high-temperature annealing one or more types of dimers or possibly trimers form in argon and krypton matrices. In a xenon matrix the authors see the presence of dimers at concentrations of 0.2%, and eventually multimers and aggregates form with high-temperature annealing. In liquid solutions of ONCl in krypton, xenon, and carbon disulfide no evidence of dimer formation is seen. In the solid state at 150-160 K they see absorption peaks at 1,925 and 520 cm{sup {minus}1}, which are attributable to the molecular solid showing Raman peaks at 1,900 and 475 cm{sup {minus}1}. For the ionic phase they observe an infrared NO{sup +} stretching frequency of about 2,090 cm{sup {minus}1}, close to that observed in Raman spectra. The frequency of the NO stretch for the molecular solid is strongly influenced in an upward direction by the presence of intimately dispersed ionic solid, leading them to believe that the molecular solid consists of long chains with strong intermolecular coupling rather than discrete dimers.

• OSTI ID: 5852754
• Journal Information: Journal of Physical Chemistry; (USA), Vol. 95:1; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
NITROGEN CHLORIDES
INFRARED SPECTRA
DIMERS
EXPERIMENTAL DATA
MATRIX ISOLATION
MEASURING METHODS
CHLORIDES
CHLORINE COMPOUNDS
DATA
HALIDES
HALOGEN COMPOUNDS
INFORMATION
NITROGEN COMPOUNDS
NUMERICAL DATA
SPECTRA
400102* - Chemical & Spectral Procedures