Continuum resonance Raman scattering in 127I79Br and 35Cl2. Experimental verification of the reflection principle
摘要:
It is shown that the excitation profiles of the various Stokes vibrational transitions show the same nodal structure as the initial wavefunctions of the continuum resonance Raman scattering process and hence indicate a reflection principle derived earlier theoretically by others. Continuum resonance Raman excitation profiles of distinct vibrational fundamental and hot band transitions of the isotopically pure molecules (IBr)-I-127-Br-79 and Cl-35(2) in the gas phase have been measured and compared with those calculated by means of time-dependent quantum theory.
Microscale preparation of isotopically enriched CF235Cl37Cl
摘要:
Isotopically enriched (CF2ClCl)-Cl-35-Cl-37 (similar to 94% isotopic purity) has been synthesised by a three-step reaction. CHF2CO2H, Cl-35(2) (99% isotopic purity) and Cl-37(2) (95% isotopic purity) have been used as reactants. intermediate products (CF2ClCO2H)-Cl-35 and (CF2ClCO2Ag)-Cl-35 have been obtained. The yield of spectroscopically pure (CF2ClCl)-Cl-35-Cl-37, With respect to CHF2CO2H, is ca. 18%. Isotopic enrichment of (CF2ClCl)-Cl-35-Cl-37 has been checked employing the splitting of chlorine isotopes observed in the gas-phase infrared spectrum for the nu(6) band region. The preparation has been improved to 1 mmol scale, obtaining a sample suitable for infrared measurements.The selective process is a general method to synthesise alternatively the three isotopic species (CF2ClCl)-Cl-35-Cl-37, (CF2Cl2)-Cl-35 and (CF2Cl2)-Cl-37. (C) 1999 Elsevier Science S.A. All rights reserved.
Abstract The ν 1 , ν 2 , and ν 3 fundamentals of nitrosyl chloride, ON 35 Cl, have been recorded with a Fourier transform interferometer at an apodized resolution of 0.004 cm −1 . The data have been analyzed together with previous microwave data for the ground vibrational state to yield improved molecular parameters for the (100), (010), and (001) vibrational states. The main results (in cm −1 ) are:
摘要 用傅立叶变换干涉仪以 0.004 cm -1 的切趾分辨率记录了亚硝酰氯 ON 35 Cl 的 ν 1 、ν 2 和 ν 3 基本原理。这些数据与先前的地面振动状态的微波数据一起进行了分析,以产生 (100)、(010) 和 (001) 振动状态的改进分子参数。主要结果(以 cm -1 为单位)是: v 1 = 1 v 2 = 1 v 3 = 1 A 2.892513(18) 2.941109(9) 2.931514(12) B 0.1922820(7) 0.1906560.17(804) C 0.1800373(7) 0.1783946(8) 0.1784287(8) ν i 1799.7316(2) 595.8518(2) 331.9707(2) 此外,已经获得了这些正常模式的每个离心畸变常数的数值。
Origin of the fine structure in the vibrational spectrum of [Pt(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mn>8</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">N</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mo>)</mml:mo></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>][Pt(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mn>8</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">N</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mo>)</mml:mo></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Cl</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>](<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">ClO</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mo>)</mml:mo></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>: Vibrational localization in a quasi-one-dimensional system
作者:S. P. Love、L. A. Worl、R. J. Donohoe、S. C. Huckett、B. I. Swanson
DOI:10.1103/physrevb.46.813
日期:——
The complex fine structure in the Raman spectrum of the quasi-one-dimensional solid [Pt(C2H8N2)2][Pt(C2H8N2)2Cl2](ClO4)4 is shown, through studies of isotopically enriched materials and lattice-dynamics calculations, to originate from vibrational modes strongly localized by the positional disorder of the two naturally occurring Cl isotopes, making this an elegant example of a real material displaying vibrational localization in one dimension. The modes responsible for the observed features reside on short chain segments defined by a few statistically favored sequences of isotopes.
Schwingungsspektren und harmonische Kraftfelder von CF3SCl und SCl2
作者:D. Bielefeldt、H. Willner
DOI:10.1016/0584-8539(80)80178-4
日期:1980.1
Molecular beam-laser spectroscopy of the neon-chlorine (NeCl2) van der Waals molecule
作者:Dwight D. Evard、Fritz. Thommen、Joseph I. Cline、Kenneth C. Janda