Infrared Spectra and Normal Vibrations of Thioamides. II. Thioacetamide

Normal vibrations of polyglycine II.

The Mid-Infrared Spectra of Normal Galaxies.

The mid-infrared spectra (2.5-5 and 5.7-11.6 µm) obtained by ISOPHOT reveal the interstellar medium emission from galaxies powered by star formation to be strongly dominated by the aromatic features at 6.2, 7.7, 8.6, and 11.3 µm. Additional emission appears in between the features, and an underlying continuum is clearly evident at 3-5 µm. This continuum would contribute about a third of the lum...

Infrared Spectra of High Polymers . II . Polyethylene *

The infrared spectrum of polyethylene has been obtained between about 3000 cm-1 and 70 em-I, polarization measurements on oriented specimens having been obtained to about 350 em-l. Assignments of the fundamentals are made with the help of a group theory analysis. The assignment of the controversial CH. wagging mode is discussed in detail and especially in terms of new evidence from the spectra ...

Crystal Structure and Infrared Spectra of Anhydrous (Adeninato )methylmercury(II)*

The title compound, C6H 7HgN5, belongs to the orthorhombic space group Pbcn, a == 14.658(8), b == 8.407(5), c == 13.006(9) A, D eal == == 2.898 g cm-3, Z == 8 molecules per cell. The structure was refined on 1132 unique nonzero reflections to R == 0.026. The crystal contains the same type of 1 : 1 monomeric molecule as the monohydrate, in which the CH3Hg group is bonded to the N(9) position of ...

Response Spectra of Structures under Subway Induced Vibrations

Passing underground trains induce vibrations transmitted to the ground surface and the nearby structures. Ordinarily, these vibrations do not result in structural damage but can harm nonstructural elements and disturb the occupants. These effects are more pronounced when evaluating buildings like hospitals, laboratories, museums, etc., and their assessment is an important design need. To respon...