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NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
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Research Journals >
Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.48 [2010] >
IJPAP Vol.48(04) [April 2010] >
| Title: | Vibrational spectral analysis of 1-methoxynaphthalene |
| Authors: | Xavier, R John
Balachandran, V
Arivazhagan, M
Ilango, G |
| Keywords: | FTIR
FT Raman spectrum
1-methoxynaphthalene
Normal coordinate analysis
Potential energy distribution |
| Issue Date: | Apr-2010 |
| Publisher: | CSIR |
| Abstract: |
The solid phase FTIR
and FT-Raman spectra of 1-methoxynaphthalene (MN) have been recorded in the
regions 4000-50 and 3500-100 cm-1, respectively. The spectra have
been carried out for the molecule of the title compound using the fundamental
modes of vibration observed in infrared and Raman spectroscopy and interpreted
with the aid of normal coordinate analysis (NCA). The vibrational modes are
classified into A' and A'' irreducible representations and distributed as  vib = 41 A' (in-plane) + 19A'' (out-of-plane) based on Cs point group symmetry
associated with the structure. A systematic set of symmetry coordinates has
been constructed. Wilson’s
F-G matrix method has been adopted for the normal coordinate analysis. A reasonable
set of potential constants evaluated for this molecule has been compared with
those of related molecules and are in the characteristic range. The potential
energy distribution (PED) has been evaluated using the vibrational spectral
data and molecular parameters. A satisfactory vibrational band assignment has
been made by using the FTIR and FT Raman spectra of the compound.
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| Page(s): | 245-250 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.48(04) [April 2010]
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