Solid-state linear polarized IR-spectroscopy of croconic and rhodizonic acids

Central European Journal of Chemistry - Tập 6 - Trang 393-399 - 2008
Tsonko Kolev1,2, Bojidarka B. Koleva3, Michael Spiteller4
1Institute of Organic Chemistry, BAS, Sofia, Bulgaria
2Plovdiv University, Faculty of Chemistry, Plovdiv, Bulgaria
3Sofia University, Faculty of Chemistry, Sofia, Bulgaria
4Institut für Umweltforschung, Universität Dortmund, Dortmund, Germany

Tóm tắt

The applications of linear-polarized IR-spectroscopy to oriented colloid suspensions in a nematic host are demonstrated with croconic and rhodizonic acids. The experimental IR vibrational assignments of the solid-state of both neutral compounds are presented. Assignments are supported by theoretical quantum chemical calculations and vibrational analysis at the DFT level of theoretical approximation with the 6-311++G** basis set.

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