Accession Number : ADD095155

Title :   Microwave Spectra of Molecules of Astrophysical Interest. XVII. Dimethyl Ether,

Corporate Author : NATIONAL STANDARD REFERENCE DATA SYSTEM

Personal Author(s) : Lovas, F J ; Lutz, H ; Dreizler, H

Report Date : Jan 1979

Pagination or Media Count : 47

Abstract : The microwave spectrum of dimethyl ether (methoxymethane) is critically reviewed and supplemented through calculations which include the contributions of internal rotation and centrifugal distortion in the molecular Hamiltonian. The primary objective of this review is to provide microwave spectral transitions applicable to molecular radio astronomy for the ground vibrational state rotational spectrum of the most abundant isotopic form of dimethyl ether, 12CH316O12CH3. While all measured rotational transition are included, the predicted transition frequencies were limited to J15 in the range 1 GHz to 300 GHz. In order to provide a complete summary of the laboratory studies on dimethyl ether, the rotational constants of the less abundant isotopic species and excited torsional states are also tabulated and all reported rotational studies are referenced. (Author)

Descriptors :   *ETHERS, *METHYL RADICALS, *MOLECULAR PROPERTIES, *MICROWAVE SPECTROSCOPY, *MOLECULAR ROTATION, CENTRIFUGAL FIELDS, DISTORTION, TRANSITIONS, GROUND STATE, MOLECULAR VIBRATION, VIBRATIONAL SPECTRA, RADIO ASTRONOMY, ISOTOPES, LABORATORY TESTS, EXPERIMENTAL DATA, TABLES(DATA), HAMILTONIAN FUNCTIONS

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE