TY  - JOUR
ID  - pittir18123
UR  - http://d-scholarship-dev.library.pitt.edu/18123/
IS  - 5674
A1  - Shin, JW
A1  - Hammer, NI
A1  - Diken, EG
A1  - Johnson, MA
A1  - Walters, RS
A1  - Jaeger, TD
A1  - Duncan, MA
A1  - Christie, RA
A1  - Jordan, KD
Y1  - 2004/05/21/
N2  - We report the OH stretching vibrational spectra of size-selected H +(H2O)n clusters through the region of the pronounced "magic number" at n = 21 in the cluster distribution. Sharp features are observed in the spectra and assigned to excitation of the dangling OH groups throughout the size range 6 ? n ? 27. A multiplet of such bands appears at small cluster sizes. This pattern simplifies to a doublet at n = 11, with the doublet persisting up to n = 20, but then collapsing to a single line in the n = 21 and n = 22 clusters and reemerging at n = 23. This spectral simplification provides direct evidence that, for the magic number cluster, all the dangling OH groups arise from water molecules in similar binding sites.
JF  - Science
VL  - 304
SN  - 0036-8075
TI  - Infrared signature of structures associated with the H<sup>+</sup>(H <inf>2</inf>O)<inf>n</inf> (n = 6 to 27) clusters
SP  - 1137 
AV  - public
EP  -  1140
ER  -