Comparison of IR and Raman forms of vibrational optical activity.

Comparison of IR and Raman forms of vibrational optical activity.
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振动光学活动的红外和拉曼形式的比较。

DOI:
10.1039/fd9949900013
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发表时间:
1994
影响因子:
3.4
通讯作者:
Freedman,TB
Freedman,TB
中科院分区:
化学2区
文献类型:
--
作者:
Nafie,LA;Yu,GS;Qu,X;Freedman,TB

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自然振动旋光性包括两种主要形式。IR形式被称为振动圆二色性(VCD),并且简单地是电子圆二色性延伸到光谱的IR振动区域。拉曼形式,称为拉曼旋光性(罗阿),是一种新的旋光性形式,在经典的旋光性形式中没有对应物。在本文中,相似性和差异的IR和拉曼形式的振动旋光性将被检查。尽管VCD和罗阿都是在1973年至1975年期间被发现和证实的,但在过去的20年里,每个领域都在不同的时间里独立地发展,在理论描述、仪器和应用方面取得了关键进展。本文将讨论VCD和罗阿目前的相对优点和缺点,并将给出(-)-α-蒎烯和氨基酸L-丙氨酸的VOA光谱的具体例子,其中VCD和罗阿数据重叠。
Natural vibrational optical activity consists of two principal forms. The IR form is known as vibrational circular dichroism (VCD) and is simply the extension of electronic circular dichroism into the IR vibrational region of the spectrum. The Raman form, known as Raman optical activity (ROA), is a new form of optical activity that has no counterpart in the classical forms of optical activity. In this paper, the similarities and differences of the IR and Raman forms of vibrational optical activity will be examined. Although both VCD and ROA were discovered and confirmed in the period from 1973 to 1975, each field has evolved independently with key advances in theoretical description, instrumentation and application coming at different times over the past 20 years. The current relative strengths and weaknesses of VCD and ROA will be discussed, and specific examples of VOA spectra of (—)-α-pinene and the amino acid L-alanine, for which overlapping VCD and ROA data are available, will be presented.
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