PRELIMINARY REPORT ON THE THERMODYNAMIC PROPERTIES OF SELECTED LIGHT- ELEMENT AND SOME RELATED COMPOUNDS
Abstract
This is the thirteenth semiannual report on the current experimental, theoretical, and evaluative program, at the National Bureau of Standards, on the thermodynamic properties of selected light-element and some related compounds of primary interest in high-temperature research. Included are new experimental results in several areas; and a number of tables of thermodynamic functions, heats of formation, ionization potentials, and electron affinities resulting from literature surveys and critical data evaluations. New experimental work on the borohydrides of aluminum and beryllium is reported. The mean value found for the standard heat of formation of Al(BH4)3 (298 K) is +2 kcal/mole for the gas and -5 kcal/mole for the liquid, with an estimated possible error as great as 17 kcal/mole. The infrared spectra of MgF2 (in a krypton matrix), Al(BH4)3, and Be(BH4)2 were measured, and a new band system was discovered for F+<. The bending fundamental of MgF2 appears to be 242 reciprocal centimeters and continuing spectroscopic work is expected to provide additional molecular constants for the other substances.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1965
- Accession Number
- AD0466510
Entities
Organizations
- National Institute of Standards and Technology