A direct measurement of the dissociation energy of water.

Maksyutenko P; Rizzo TR; Boyarkin OV

doi:10.1063/1.2387163

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Journal article

A direct measurement of the dissociation energy of water.

Maksyutenko P Laboratoire de Chimie Physique Moléculaire, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
Rizzo TR
Boyarkin OV

2006-11-23

Published in:

The Journal of chemical physics. - 2006

English We have performed a direct measurement of one of the most fundamental thermochemical values: the O-H bond energy in water. Using a triple-resonance laser excitation scheme, we excite the molecule through a series of vibrational overtone transitions to access directly the onset of the dissociative continuum. The dissociation energy obtained from our experiments, 41145.94+/-0.15 cm(-1), is approximately 30 times more accurate than the currently accepted value and has important implications for other thermochemical quantities linked to the bond energy of water.

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