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Rotational Spectrum and Structure of the Quinuclidine–Water Complex

✍ Scribed by D. Consalvo; W. Stahl

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
252 KB
Volume
174
Category
Article
ISSN
0022-2852

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✦ Synopsis

The rotational spectrum of the quinuclidine-water complex has been observed in the region 6-20 GHz using a pulsed molecular beam Fourier transform microwave (MB-FTMW) spectrometer. In order to obtain detailed structural information on the complex, spectra of quinuclidine, also called 1-azabicyclo[2.2.2]octane (ABCO), combined with both H 2 O and H 2 18 O were examined. The observation of a symmetric top spectrum is consistent with a complex in which water undergoes internal rotation. Using a reasonable model for the interaction potential, it has been possible to estimate the torsional barrier of water. Centrifugal distortion analysis yields a N-H bond stretching force constant of 12.3 N/m, corresponding to a stretching frequency of 116 cm 01 for ABCO-H 2 16 O.

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