室温下液态四氯化碳的去极化率以及相对强度数据与各种同位素丰度比之间的相关性。
Depolarization ratio and correlation between the relative intensity data and the abundance ratio of various isotopes of liquid carbon tetrachloride at room temperature.
作者信息
Chakraborty Taposh, Rai Sachchida Nand
机构信息
Sophisticated Analytical Instrument Facility, North-Eastern Hill University, Bijni Complex, Laitumkhrah, Shillong 793003 Meghalaya, India.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2005 Nov;62(1-3):438-45. doi: 10.1016/j.saa.2005.01.012.
The room temperature Stokes and anti-Stokes Raman spectra of liquid CCl(4) have been recorded. The intensity ratios of anti-Stokes to Stokes Raman bands as a function of Raman shift are obtained in agreement with polarizability theory. The depolarization ratio rho (nu) as a function of Raman shift is obtained also in agreement with automatically scanned depolarization ratio rho (nu). Ratio of the intensity of the isotopic nu(1) bands indicates small deviation from the theoretical relative abundance of CCl(4) isotopes. The intensity ratio of the [nu(3)-nu(4), (nu(1)+nu(4))-nu(4)] and nu(1) bands is obtained. The consequences of the presence of different isotopes of CCl(4) on the depolarization ratio of its vibrational bands are discussed. The effects of impurities in liquid CCl(4) on depolarization ratio of the nu(1) band are estimated.
已记录了液态四氯化碳在室温下的斯托克斯和反斯托克斯拉曼光谱。获得了反斯托克斯与斯托克斯拉曼带的强度比随拉曼位移的变化情况，这与极化率理论相符。还获得了去偏振比ρ(ν)随拉曼位移的变化情况，这也与自动扫描的去偏振比ρ(ν)相符。同位素ν(1)带的强度比表明与四氯化碳同位素的理论相对丰度存在小的偏差。获得了[ν(3)-ν(4), (ν(1)+ν(4))-ν(4)]和ν(1)带的强度比。讨论了四氯化碳不同同位素的存在对其振动带去偏振比的影响。估计了液态四氯化碳中杂质对ν(1)带去偏振比的影响。
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