Millimeterwave spectrum of DC discharge produced ICN in excited vibrational states |
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Authors: | P R Varadwaj and A I Jaman |
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Institution: | (1) Center for Computational Natural Sciences and Bioinformatics, International Institute of Information Technology, Hyderabad, 500032, India;(2) Centre for Computational Chemistry and School of Chemistry, University of Bristol, Bristol, BS8 1TS, UK; |
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Abstract: | An indigenously built 50 kHz source-modulated millimeter-wave spectrometer was used to produce cyanogen iodide (ICN) in the
excited vibrational states (0110), (0330), (1000), (2000) and (0200) and record their corresponding rotational spectra. The analysis of the recorded spectra was carried out in the frequency
range of 57.0–98.0 GHz. ICN was produced using a DC glow discharge through a mixture of methyl iodide (CH3I) and benzyl cyanide (C6H5CH2CN) vapor at low pressure. 127I nuclear quadrupole hyperfine structure and the l-type doublet spectra of (0110) state have been resolved. The observed and assigned rotational transition frequencies were used in a least-square fit to
determine more accurate values of molecular constants. The agreement between the derived parameters and those reported earlier
clearly indicate that the reported spectral lines belong to ICN in the excited vibrational states. It also indicates that
ICN could be produced in selective excited vibrational states by DC glow discharge technique. |
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