Infrared spectra of the hydrated borates

Infrared Spectra of the Crystalline Inorganic Borates

. Infrar ed absorp t ion spectra of a n hydrous, crystalline, inorgani c borates were obtained lLl ~he .2000 cmI to 300 cmI ra nge. Compounds wit h B'O a nd B " isotopes were prepa red to ass Ist lI1 terpretatlOn . Spectra l bands for all or t hoborates and py roborates a nd som e meLaborates could be assigned sat isfactorily . Borates wit h complex rin gtype an ion s genera lly e~'(hlblted spe...

Infrared spectroscopy of hydrated sulfate dianions.

We report the first infrared spectra of multiply-charged anions in the gas phase. The spectra of SO(4) (2-)(H(2)O)(n), with n=3-24, show four main bands assigned to two vibrations of the dianionic core, the water bending mode, and solvent libration. The triply degenerate SO(4) (2-) antisymmetric stretch vibration probes the local solvent symmetry, while the solvent librational band is sensitive...

Infrared Spectra of Tissues.

Near-Infrared Spectra of Ultraluminous Infrared Galaxies.

Near-infrared spectra with a resolution of lambda&solm0;Deltalambda approximately 1100 in the rest-wavelength range of 1.8-2.2 µm have been obtained for a complete sample of 33 ultraluminous infrared galaxies (ULIRGs). Of the 33 objects observed, two show evidence of a central active galactic nucleus (AGN) through either a broad Paschen-alpha line or emission in the 1.963 µm fine structure of [...

The Ultrafiltration Performance of Cellulose Acetate Asymmetric Membranes: A New Perspective on the Correlation with the Infrared Spectra

Integral asymmetric cellulose acetate (CA) membranes were casted by phase-inversion with formamide varying content - 22, 30 and 34% - as pore promoter. These membranes, CA-22, CA-30 and CA-34, were analyzed by infrared spectroscopy in attenuated total reflection mode (ATR-FTIR) to investigate the porous membrane matrix influence on the polymer/water/solute interactions and the selective ultrafi...