title: A new aromatic probe - The ring stretching vibration Raman spectroscopy frequency.
abstract: A new aromatic criterion is presented to determine the aromatic degree of the high symmetric molecules. Group theory is used to explain the correlation between the aromatic degree and the value of Ring Stretching Vibration Raman Spectroscopic Frequency (RSVRSF). The calculations of the geometrical optimization, nucleus-independent chemical shifts (NICS) and values of the Raman Spectroscopy for the aromatic molecules-LnHn (L=C, Si, Ge, n=3, 5-8) were performed using the Density Functional Theory (DFT) Method, as well as the correlations between the values of their RSVRSF and NICS values by Statistic Package for Social Science (SPSS17.0). There are high positive correlations between the theoretical calculated the NICS values and the value of the RSVRSF (A1g/A1') of the LnHn (L=C, Si, Ge, n=3, 5-8). The bigger the aromatic degree, the bigger the RSVRSF is. The value of the RSVRSF is a new probe of aromaticity. Expectedly, it is predicted that the experimental determination of the aromatic degree can be achieved by the determination of the ring stretching vibration (A1g/A1') Raman spectrum frequencies for the aromatic target molecules.
authors.affiliation: Chemistry and Environment Science College, Inner Mongolia Normal University, Inner Mongolia Key Laboratory of Green Catalysis, Hohhot, Inner Mongolia 010022, China.
authors.forename: Yan-Bo
authors.initials: YB
authors.lastname: Guo
authors.affiliation: Chemistry and Environment Science College, Inner Mongolia Normal University, Inner Mongolia Key Laboratory of Green Catalysis, Hohhot, Inner Mongolia 010022, China. Electronic address: liuzz@imnu.edu.cn.
authors.forename: Zi-Zhong
authors.initials: ZZ
authors.lastname: Liu
authors.affiliation: Chemistry and Environment Science College, Inner Mongolia Normal University, Inner Mongolia Key Laboratory of Green Catalysis, Hohhot, Inner Mongolia 010022, China.
authors.forename: Hong-Xia
authors.initials: HX
authors.lastname: Liu
authors.affiliation: Education Science College, Inner Mongolia Normal University, Hohhot, Inner Mongolia 010022, China.
authors.forename: Feng-Ying
authors.initials: FY
authors.lastname: Zhang
authors.affiliation: Chemistry and Environment Science College, Inner Mongolia Normal University, Inner Mongolia Key Laboratory of Green Catalysis, Hohhot, Inner Mongolia 010022, China.
authors.forename: Jun-Qing
authors.initials: JQ
authors.lastname: Yin
keywords: Aromatic degree; Correlation; Density Functional Theory; Ring Stretching Vibration Raman spectrum