Molecular Structure Determination by Gas Electron Diffraction at High Temperatures. I. Arsenic
- 1 January 1966
- journal article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 39 (1) , 64-71
- https://doi.org/10.1246/bcsj.39.64
Abstract
A high-temperature nozzle assembly for gas-electron diffraction has been designed and constructed. The molecular structure of gaseous arsenic at 485°C has then been investigated by the use of this nozzle. The regular tetrahedral structure of the molecule has been confirmed from the observed index of resolution; the interatomic distance has been determined to be rg(As−As)=2.435±0.004Å, while the mean amplitude has been determined for the first time (l(As−As)=0.085±0.006Å). The observed amplitude has led to the evaluation of the bond-stretching force constant, fr(As−As)=1.5±0.3 mdyn./Å.Keywords
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