A Low Temperature Infrared Study on the Association of Thiols with Pyridine and Triethylamine | Zendy

Ricardo Bicca de Alencastro | Zendy; C. Sándorfy | Zendy

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A Low Temperature Infrared Study on the Association of Thiols with Pyridine and Triethylamine

Author(s) -

Ricardo Bicca de Alencastro,

C. Sándorfy

Publication year - 1973

Publication title -

canadian journal of chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.323

H-Index - 68

eISSN - 1480-3291

pISSN - 0008-4042

DOI - 10.1139/v73-146

Subject(s) - chemistry , triethylamine , pyridine , thiol , hydrogen bond , overtone , photochemistry , infrared , infrared spectroscopy , proton , raman spectroscopy , molecule , medicinal chemistry , organic chemistry , spectral line , physics , quantum mechanics , astronomy , optics

The infrared spectra of solutions containing propane-1-thiol or benzenethiol as proton donors, and pyridine or triethylamine as proton acceptors were measured down to about −100 °C. The dependence of hydrogen bond formation on concentration and temperature was studied at the fundamental and overtone region of the S—H stretching vibration. The predominant species is found to be a 1:1 [Formula: see text] type complex. In addition, evidence was found for the existence of more highly associated species at low temperatures. Thiol–thiol [Formula: see text] type hydrogen bonds are also present in the case of benzenethiol–pyridine mixtures.

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