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Reply to comment on “The evolution between slow and rapid chemical exchange processes in a liquid binary mixture”

✍ Scribed by J. Yarwood

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 163 KB
Volume: 208
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)87190-e

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✦ Synopsis

We emphasise that a collapsing infrared or Raman band profile with increasing temperature doesnot necessarily imply a movement between the "slow" and "rapid" exchange regimes. We point to systems where band collapse occurs in the slow regime and suggest that for a CH,CN/CH,OH binary mixture the spectra are so complex that unambiguous analysis is diff'cult.

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Comment on “The evolution between slow and rapid chemical exchange processes in a liquid binary mixture”

✍ Martyn C.R. Symons 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 147 KB

It is suggested that the infrared spectra for the C-N stretch of CH&N in methanol and water give evidence for a kinetic averaging of individual bands. The situation is similar to that described in the Letter by Besnard, CabaGo and Yatwood.

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The evolution between slow and rapid chemical exchange processes in a liquid binary mixture

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Binary mixtures of pyridine and ethanol display Raman spectra (111 of pyridine) with significantly different band shapes at different temperatures (between 98 and 368 K). At the lowest temperature these spectra indicate the formation of a hydrogenbonded complex in the slow modulation limit (giving a