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NO diffusion and dimer formation in a nitrogen matrix studied by FTIR spectroscopy

✍ Scribed by F. Legay; N. Legay-Sommaire

Book ID: 103035750
Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 565 KB
Volume: 211
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)80136-d

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✦ Synopsis

The formation of nitric oxide dimers in a nitrogen matrix at 24.5 and 25.2 K was monitored by Fourier transform infrared spectroscopy and the results are interpreted by a numerical simulation. The diffusion coefficient is fitted by D=Doexp( -E/kT), with Do= 90 cm's_' and E= 716 cm-'. The dissociation coef%zient, K,= 2.2 x 1 0L9 molecule cmm3, does not change between 24 and 32 K. A C, rotation of a NO, N,, N2 cluster is proposed as the most probable elementary step for diffusion. The cis-and trans-(N0)1 band intensities are evaluated relative to the monomer.

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