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21 results on '"Calder, G. V."'

8. A method of isolating organic compounds present in water

Author

Calder, G. V, Fritz, J, and Junk, G. A

Subjects
Materials
Abstract

Water sample is passed through a column containing macroreticular resin, which absorbs only nonionic organic compounds. These compounds are selectively separated using aqueous eluents of varying pH, or completely exuded with small amount of an organic eluent.

Published
1972

9. Geometry and Vibrational Spectra of the Alkaline Earth Dihalides. III. MgCl2, CaCl2, SrCl2 and BaCl2.

Author

PENNSYLVANIA UNIV PHILADELPHIA DEPT OF CHEMISTRY, White,David, Calder,G. V., Hemple,S., PENNSYLVANIA UNIV PHILADELPHIA DEPT OF CHEMISTRY, White,David, Calder,G. V., and Hemple,S.

Abstract

The infrared spectra of MgCl2, CaCl2, SrCl2 and BaCl2 trapped in solid krypton matrices at 20K are reported. From precise measurements of changes in the vibrational modes on isotopic substitution, a linear configuration for MgCl2 and CaCl2 is confirmed and an apex angle of 120 degrees is established for SrCl. For BaCl2 the bond angle has been estimated at 100 degrees. Using a valence force field a set of force constants has been obtained from the measured fundamental frequencies as well as approximate values for the anharmonic corrections to some of the vibrational modes. The statistical entropies calculated from the vibrational frequencies and molecular geometries are in excellent agreement with the thermodynamic measurements. (Author), See also report dated 16 Apr 69, AD-686 158.

Published
1973

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