Vibrational study of 5-azacytosine and propanedinitrile under high pressure

The effect of high pressure on the vibrational modes of 5-azacytosine (C3H4N4O) and propanedinitrile (CH2(CN)2) was investigated at room temperature using a diamond anvil cell (DAC). In situ infrared and Raman spectroscopy results indicated that the ring structure of 5-azacytosine remained preserved...

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Bibliographic Details
Published inVibrational spectroscopy Vol. 78; pp. 60 - 65
Main Authors Puerto, M.A., Miotto, F., Catafesta, J., Perottoni, C.A., Balzaretti, N.M.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.05.2015
Subjects
5-Azacytosine
Band spectra
Banded structure
Diamond anvil cells
High pressure
Infrared
Infrared spectroscopy
Polymerization
Propanedinitrile
Ring structures
Spectroscopy
Vibrational properties
Propanedinitrile
5-Azacytosine
Vibrational properties
High pressure
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Summary:The effect of high pressure on the vibrational modes of 5-azacytosine (C3H4N4O) and propanedinitrile (CH2(CN)2) was investigated at room temperature using a diamond anvil cell (DAC). In situ infrared and Raman spectroscopy results indicated that the ring structure of 5-azacytosine remained preserved and the band shifts induced by high pressure were fully reversible up to 13GPa. For the open-chain structure of propanedinitrile, a polymerization reaction was observed by infrared spectroscopy almost instantly at about 15GPa at room temperature. The same pressure-induced polymerization was observed after a week at 1GPa, at room temperature.
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ISSN:0924-2031
1873-3697
DOI:10.1016/j.vibspec.2015.04.001