Infrared Spectra of Alkyldiboranes. III. 1,2-Dimethyl- and 1,2-Diethyldiboranes
- 1 August 1960
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 33 (2), 590-597
- https://doi.org/10.1063/1.1731190
Abstract
The infrared spectra of three isotopic variants of 1,2‐dimethyldiborane—(CH3B10H2)2, (CH3BH2)2, (CH3BD2)2—and of five 1,2‐diethyldiboranes—(C2H5B10H2)2, (C2H5BH2)2, (C2H5BD2)2, (C2D5BH2)2, (C2D5BD2)2—are reported and frequency assignments are made. 1,2‐Dialkyldiboranes are very stable with respect to decomposition, but on prolonged standing rearrange to 1,1‐dialkyldiboranes. Appearance of absorptions at ca 2100 and 1550 cm—1 is the first indication of the presence of 1,1‐dialkyldiborane impurity. Although not conclusive, the evidence favors existence of predominantly cis configurations.Keywords
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