The Raman Spectrum of Liquid Diborane
- 1 October 1938
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 6 (10) , 586-591
- https://doi.org/10.1063/1.1750128
Abstract
The Raman spectrum of B2H6(l) is found to contain an isotopic triplet (v1) 793, 806, 821 cm—1, a broad line (v2?) 1108 cm—1 and a very intense doublet (v3?) 2102, 2523 cm—1 as well as several weaker lines. Abnormally large values for the B–B, C–C, and Si–Si bond force constants in B2H6, C2H6, and Si2H6 suggest that these bonds are compressed in these molecules by forces which may be associated with those which restrict internal rotation. The value of 55.3±1.5 cal./deg. is calculated for the entropy of B2H6(g) at 25°. Combined with the known heat of formation this value leads to a free energy of formation of —30,000±4000 cal. for B2H6(g) at 25°. This large value does not truly indicate high stability, for diborane decomposes easily to form other boron hydrides.Keywords
This publication has 14 references indexed in Scilit:
- The Electron Diffraction Investigation of the Molecular Structures of (1) Phosphorus Oxytrichloride, Oxydichlorofluoride, Oxychlorodifluoride, Oxytrifluoride, Fluorodichloride, Pentafluoride, and Trifluorodichloride, and of (2) Disilane, Trichlorosilane, and HexachlorodisilaneJournal of the American Chemical Society, 1938
- Hindered Internal Rotation of EthaneThe Journal of Chemical Physics, 1938
- Raman Effect in Liquid EthaneThe Journal of Chemical Physics, 1938
- Carbon—Carbon Bond Distances. The Electron Diffraction Investigation of Ethane, Propane, Isobutane, Neopentane, Cyclopropane, Cyclopentane, Cyclohexane, Allene, Ethylene, Isobutene, Tetramethylethylene, Mesitylene, and Hexamethylbenzene. Revised Values of Covalent RadiiJournal of the American Chemical Society, 1937
- Thermodynamic Functions for Molecules Having Restricted Internal RotationsThe Journal of Chemical Physics, 1937
- The Structure of DiboraneJournal of the American Chemical Society, 1937
- The theory of the structure of ethylene and a note on the structure of ethaneProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1934
- The Raman Effect in Ammonia and Some Other GasesPhysical Review B, 1933
- HYDRIDES OF BORON. I. AN EFFICIENT NEW METHOD OF PREPARING DIBORANE; NEW REACTIONS FOR PREPARING BROMO-DIBORANE AND THE STABLER PENTABORANE, B5H9Journal of the American Chemical Society, 1931
- ber den Ramaneffekt des KohlendioxydsThe European Physical Journal A, 1931