Journal
CHEMICAL PHYSICS LETTERS
Volume 509, Issue 4-6, Pages 89-95Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2011.04.060
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Funding
- U. S. National Science Foundation [CHE-091199]
- National Institute of Standards and Technology
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [911199] Funding Source: National Science Foundation
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The Zundel ion, H2O center dot H+center dot H2O, provides a versatile scaffold with which to explore the quantum structure of the intermolecular proton bond (IPB). This information is encoded in the vibrational frequencies adopted by the shared proton, nu(sp), which are observed to follow a remarkably similar trend as the exterior OH groups are sequentially solvated or are replaced by methyl substituents. In effect, solvents H-bonding to exterior OH groups act to increase the proton affinity of the water to which they are bound in a roughly additive fashion. We discuss this behavior in the context of the extreme sensitivity of IPBs to their solvation environments. (C) 2011 Elsevier B.V. All rights reserved.
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