ISSN:
0749-1581
Keywords:
EPR
;
rotating cryostat
;
alkali metal atoms
;
Q-band
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
A rotating cryostat was used to trap the Group 1 metal atoms in adamantane and cyclohexane matrices at 77 K. Electron paramagnetic resonance spectra of matrix-isolated atoms were obtained in adamantane at X- and Q-band frequencies. The magnetic parameters were calculated from exact solutions of the Breit-Rabi equation and compared with values in the gas phase and in rare gas matrices. The EPR spectra show no evidence for g and/or hyperfine anisotropy. Consequently, there is no evidence for the dipolar state of these atoms. Furthermore, trimers, pentamers and/or septamers are not formed from Rb and Cs under experimental conditions that have led to the formation of Li3, Li5, Na3 and K7. Group 1 atoms in a solid cyclohexane matrix give only colloidal metal particles with an average diameter of less than 102 Å.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260331316
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