Infrared spectra of Ph ? X (X=OCH3, SCH3, SCL, and SeCl) crystals in polarized light

1976 ◽  
Vol 25 (2) ◽  
pp. 1060-1062
Author(s):  
A. B. Remizov ◽  
T. G. Mannafov
Keyword(s):  
Infrared Spectra ◽  
Polarized Light

Infrared spectra in polarized light of crystalline C5H5NiNO and C5D5NiNO

1973 ◽  
Vol 29 (2) ◽  
pp. 277-284 ◽  
Author(s):  
A. Poletti ◽  
R. Cataliotti ◽  
G. Paliani
Keyword(s):  
Infrared Spectra ◽  
Polarized Light

Infrared Spectra of Organic Monolayers on Mica

1989 ◽  
Vol 43 (3) ◽  
pp. 473-476 ◽  
Author(s):  
George Carson ◽  
Steve Granick
Keyword(s):  
Optical Properties ◽  
Infrared Spectra ◽  
Polarized Light ◽  
Organic Monolayers ◽  
Monolayer Film ◽  
Organic Monolayer ◽  
Interference Fringes ◽  
Muscovite Mica

A method is described for obtaining infrared spectra of an organic monolayer film on muscovite mica. This task is normally difficult because mica is not metallic, and it has biaxial optical properties and produces large interference fringes when analyzed in transmission or reflection because of reflections off the front and back of a sheet. The method involves the transmission of parallel-polarized light, incident at the Brewster's angle, through a mica sheet that is oriented along one of its principal optical directions.

Microreflectance Infrared Study of Bis(Ethylenedithio)-Tetrathiafulvalene (BEDT-TTF or ET) Salts

1992 ◽  
Vol 46 (10) ◽  
pp. 1520-1524 ◽  
Author(s):  
John R. Ferraro ◽  
H. Hau Wang ◽  
Myung-Hwan Whangbo ◽  
Phil Stout
Keyword(s):  
Infrared Spectra ◽  
Polarized Light ◽  
Structural Disorder ◽  
Donor Molecule ◽  
Infrared Study ◽  
Unpolarized Light ◽  
Β Phase ◽  
Light Vector ◽  
Deuterium Analog

For several β- and κ-phase salts of bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF or simply ET) and its deuterium analog d8-ET, microreflectance infrared spectra were obtained by employing polarized and unpolarized light, and their vibronic regions were examined. These salts exhibit a strong vibronic absorption under polarized light. The vibronic absorption of the β-phase salts has a much stronger polarization-dependency than that found for the κ-phase salts. For the β-phase salts, the optimum vibronic absorption occurs when the polarized light vector is parallel to their donor-molecule stacking direction. Among the ET salts without structural disorder, the highest C-C-H bending frequency for the superconductors is lower than ∼1320 cm−1 while that for the non-superconductors is higher than ∼1320 cm−1.

Infrared Spectra in Polarized Light of Crystalline Benzene and Benzene‐d6

1970 ◽  
Vol 53 (3) ◽  
pp. 867-875 ◽  
Author(s):  
M. P. Marzocchi ◽  
H. Bonadeo ◽  
G. Taddei
Keyword(s):  
Infrared Spectra ◽  
Polarized Light ◽  
Crystalline Benzene

Interference effects in the infrared spectra in polarized light of monoclinic crystals

1976 ◽  
Vol 12 (4) ◽  
pp. 349-354 ◽  
Author(s):  
M.P. Marzocchi ◽  
L. Angeloni ◽  
G. Sbrana
Keyword(s):  
Infrared Spectra ◽  
Polarized Light ◽  
Interference Effects

Analyse der Grundschwingungen von Phenanthren aus experimentellen Ergebnissen

1967 ◽  
Vol 22 (8) ◽  
pp. 1247-1254 ◽  
Author(s):  
K. Witt ◽  
R. Mecke
Keyword(s):  
Single Crystal ◽  
Infrared Spectra ◽  
Polarized Light ◽  
Mixed Crystals ◽  
Vibrational Assignment ◽  
Additional Information ◽  
Ir Bands

A vibrational assignment of phenanthrene is proposed, which differs in some details from a previous paper. The infrared spectra of the gas, solution, KJ-pellet, single crystal in polarized light between 200 and 3200 cm-1, the dichroism of the infrared bands between 400 and 3200 cm-1 at the temperature of boiling nitrogen, the depolarisation ratios of the RAMAN bands and some infrared bands of mixed crystals (in fluorene and biphenyl) are analyzed. The infrared spectra of similar molecules (triphenylene, halogenphenanthrenes) contribute additional information in several cases. Nevertheless the inability of predicting the experimental dichroism of many B1-IR-bands by the oriented gas model and the weak intensities (therefore missing depolarisation ratios) of B1-RAMAN-bands lead yet to some uncertainties particularly for the B1-species.

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