HYDROGEN BOND NETWORK ISOMERS OF THE WATER NONAMER AND DECAMER OBSERVED BY BROADBAND ROTATIONAL SPECTROSCOPY

Perez, Cristobal; Zaleski, Daniel P.; Seifert, Nathan A.; Pate, Brooks H.; Kisiel, Zbigniew; Temelso, Berhane; Shields, George C.

HYDROGEN BOND NETWORK ISOMERS OF THE WATER NONAMER AND DECAMER OBSERVED BY BROADBAND ROTATIONAL SPECTROSCOPY

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Date

2013

Authors

Perez, Cristobal

Zaleski, Daniel P.

Seifert, Nathan A.

Pate, Brooks H.

Kisiel, Zbigniew

Temelso, Berhane

Shields, George C.

Publisher

Ohio State University

Abstract

After our previous study of the rotational spectrum of water clusters in the 6-18 GHz region, in order to study clusters of larger size ($> $8 w a t e r m o l e c u l e s), a c h i r p e d − p u l s e F o u r i e r t r a n s f o r m m i c r o w a v e s p e c t r o m e t e r i n t h e 2−8 G H z f r e q u e n c y r a n g e h a s b e e n u s e d t o o b t a i n t h e b r o a d b a n d r o t a t i o n a l s p e c t r a o f f i v e w a t e r n o n a m e r i s o m e r s a n d f o u r w a t e r d e c a m e r i s o m e r s i n a p u l s e d m o l e c u l a r b e a m . T h e o x y g e n a t o m f r a m e w o r k g e o m e t r i e s f o r t h r e e n o n a m e r s a n d t w o d e c a m e r s h a v e a l s o b e e n u n a m b i g u o u s l y i d e n t i f i e d f r o m i s o t o p i c l a b e l i n g m e a s u r e m e n t s u s i n g a n H$ {2}$$^{18} $O e n r i c h e d s a m p l e . T h r e e o f t h e f o u r o b s e r v e d w a t e r d e c a m e r s h o w t u n n e l i n g e f f e c t a s s o c i a t e d w i t h t h e i n t e r n a l d y n a m i c s o f h y d r o g e n − b o n d n e t w o r k i n a s i m i l a r f a s h i o n a s t h e p r i s m w a t e r h e x a m e r . T h e s e t u n n e l i n g p a t h s a r e q u e n c h e d u p o n a s i n g l e i n c o r p o r a t i o n o f a H$ {2}$$^{18} $O m o l e c u l e i n t h e c l u s t e r . D u e t h e l a r g e a m o u n t o f c l o s e l y − s p a c e d r o t a t i o n a l t r a n s i t i o n s i n t h e H$ _{2}$$^{18}$O spectrum, automated fitting tools were employed to extract the corresponding rotational spectra, which will be also briefly described.

Description

Author Institution: Department of Chemistry, University of Virginia, McCormick Rd.; Charlottesville, VA 22904-4319; Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warszawa, Poland; Dean's Office, College of Arts and Sciences, and Department of Chemistry, Bucknell University, Lewisburg, PA 17837

URI

http://hdl.handle.net/1811/55400

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Abstracts of OSU International Symposium on Molecular Spectroscopy 2010-2013

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