Infrared Spectrum of AlCl3 and Al2Cl6 Isolated in Solid Argon
Abstract
The infrared spectra of monomeric and dimeric aluminum chloride trapped in solid argon have been observed. For the monomer AlCl3 four infrared-active fundamentals including the symmetric stretch are observed, implying a pyramidal equilibrium structure. Other experimental data for AlCl3 are consistent with such a structure. A normal coordinate analysis suggests a Cl-Al-Cl angle near 112°. The structures of the aluminum halides are compared with observed trends in alkaline-earth dihalides.
- Publication:
-
Journal of Chemical Physics
- Pub Date:
- April 1972
- DOI:
- 10.1063/1.1677830
- Bibcode:
- 1972JChPh..56.4171L