Skip to main content

Examinations of the Matrix Isolation Fourier Transform Infrared Spectra of Organic Compounds. Part V

Buy Article:

$29.00 plus tax (Refund Policy)

Abstract:

MI/FT-IR spectral data have been collected on selected types of organic compounds containing the carbonyl group. By the varying of the ratio of the matrix gas to the compound (M/E) as well as the matrix gas (Ar vs. Xe), the observed splitting of the carbonyl absorption band was attributed to both conformer isolation and aggregation in the matrix. The splitting of the carbonyl group of methyl acetate was attributed to aggregation, while conformer isolation was found to exist for phenyl acetate and trimethylacetaldehyde. The magnitude of the splittings found in this study, 3-30 cm−1, is within the range of values found for other organic compounds. Band splitting was shown by (1) compounds that are linear and contain ≤5 carbons or (2) compounds that are branched and contain <5 carbons. Compounds having >5 carbons displayed only band broadening. Varying M/E ratios has been found to be a reasonable method by which to distinguish between conformer and aggregation. These data confirm the influence of sample phase and indicate that extreme care must be taken in the use of MI/FT-IR spectra as physical probes for structure determination.

Keywords: Argon; Concentration; Matrix gas; Matrix isolation; Vapor phase; Xenon

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702874447284

Affiliations: R. J. Reynolds Tobacco Company, Bowman Gray Technical Center, Winston-Salem, North Carolina 27102

Publication date: November 1, 1987

More about this publication?
sas/sas/1987/00000041/00000008/art00032
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more