2024
DOI: 10.1063/5.0200892
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Spectra of the D2O dimer in the O–D fundamental stretch region: The acceptor symmetric stretch fundamental and new combination bands

A. J. Barclay,
A. R. W. McKellar,
N. Moazzen-Ahmadi

Abstract: The O–D stretch fundamental region of the deuterated water dimer, (D2O)2, is further studied using a pulsed supersonic slit jet and a tunable optical parametric oscillator infrared source. The previously unobserved acceptor symmetric O–D stretch fundamental vibration is detected, with Ka = 0 ← 0 and 1 ← 0 sub-bands at about 2669 and 2674 cm−1, respectively. The analysis indicates that the various water dimer tunneling splittings generally decrease in the excited vibrational state, similar to the three other pr… Show more

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