NotesFAQContact Us
Search Tips
Peer reviewed Peer reviewed
Direct linkDirect link
ERIC Number: EJ824934
Record Type: Journal
Publication Date: 2008-Jan
Pages: 4
Abstractor: As Provided
Reference Count: 33
ISSN: ISSN-0021-9584
Observation and Analysis of N[subscript 2]O Rotation-Vibration Spectra: A Physical Chemistry Laboratory Experiment
Bryant, Mark S.; Reeve, Scott W.; Burns, William A.
Journal of Chemical Education, v85 n1 p121-124 Jan 2008
The linear molecule N[subscript 2]O is presented as an alternative gas-phase species for the ubiquitous undergraduate physical chemistry rotation-vibration spectroscopy experiment. Utilizing a 0.5 cm[superscript -1] resolution teaching grade FTIR spectrometer, 15 vibrational bands, corresponding to 1229 rotation-vibration transitions, have been observed in the region 5000-500 cm[superscript -1]. The large quantity of observed data presents the opportunity to assign each of 15 students, or groups, a unique band to analyze independently. The data analysis of each band is straightforward, involving P- and R- branch transition-energy expressions similar to those used in the analysis of traditional diatomic molecules such as HCl and CO, and result in the determination of a band origin and "B" rotational constants. Spectroscopic constants of independent band analyses can be pooled to determine anharmonicity and vibration-rotation constants and prepare a vibrational energy-level diagram involving the 15 observed states. (Contains 3 figures, 3 tables and 2 notes.)
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A