On the Trimerization of Cyanoacetylene: Mechanism of Formation of Tricyanobenzene Isomers and Laboratory Detection of Their Radio Spectra
✍ Scribed by Prof. Dr. Henning Hopf; Cornelia Mlynek; Prof. Dr. Robert J. McMahon; Jessica L. Menke; Prof. Dr. Alberto Lesarri; Dr. Michael Rosemeyer; Prof. Dr. Jens-Uwe Grabow
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 370 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0947-6539
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✦ Synopsis
Abstract
In support of a deeper understanding of the chemistry of cyanoacetylene—a known constituent of planetary atmospheres and interstellar space—theoretical and experimental studies address the chemical mechanism of dimerization and trimerization, and provide high‐resolution rotational spectra of two of the trimeric products, 1,2,3‐ and 1,2,4‐tricyanobenzene. Analysis of the rotational spectra is particularly challenging because of quadrupolar coupling from three ^14^N nuclei. The laboratory rotational spectra provide the basis for future searches for these polar aromatic compounds in interstellar space by radio astronomy.
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The nanostructured phases formed in the elemental powder blends of nominal compositions Al 92 Mn 6 Ce 2 and Al 93 Mn 6 Ce 1 during mechanical alloying were investigated by X-ray diffraction and transmission electron microscopy. The difference in Ce content in the two alloys strongly influenced the t