Accession Number : ADA262822


Title :   Mass Spectrometric Investigation of 2-Methoxyethanol and 2-Ethoxyethanol Clusters: Magic Numbers and Structural Implications


Descriptive Note : Technical rept.,


Corporate Author : STATE UNIV OF NEW YORK AT BUFFALO DEPT OF CHEMISTRY


Personal Author(s) : Vaidyanathan, Gopal ; Herron, William J ; Garvey, James F


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a262822.pdf


Report Date : 03 Apr 1993


Pagination or Media Count : 49


Abstract : In this paper we present the results of our mass spectrometric investigations for van der Waals clusters of 2-methoxyethanol and 2- ethoxyethanol. The cluster mass spectra were acquired for a variety of expansion conditions and electron energies. The protonated alkoxyethanol cluster ions (AE)nH(+) form the dominant cluster ion series. A number of fragment ions, that may arise from an unprotonated and/or a protonated alkoxyethanol molecular ion, were solvated by additional alkoxyethanol molecules. The (AE)n(H20)mH(+) ions were observed with significant intensities only for n /= 5 in neat as well as mixed alkoxyethanol/water expansions. It was also found that (AE) n (H20)m H(+) cluster ions which satisfy the condition n = 2 (m + 2), for m = 1 and 2, have enhanced ion intensities. The various models that may explain the behavior of (AE)n(H20)mH(+) are discussed.


Descriptors :   *MASS SPECTROMETRY , IONS , MODELS , WATER , STRUCTURAL ANALYSIS , ENERGY , INTENSITY , PHASE , GASES , MOLECULAR IONS , ELECTRONS , CLUSTERING , EXPANSION , SOLVATION , FRAGMENTS , CONDENSATION , ETHANOLS


Subject Categories : Organic Chemistry
      Physical Chemistry
      Atomic and Molecular Physics and Spectroscopy


Distribution Statement : APPROVED FOR PUBLIC RELEASE