November 2010

Silicon Monocarbide

Silicon monocarbide (SiC) was discovered in 1989 by Cernicharo et al. in IRC +10216 with the IRAM 30m telescope. This detection has evidently never been confirmed.

Other detected silicon carbide species include: cylic silicon dicarbide, cyclic silicon tricarbide, and linear silicon tetracarbide.

Although SiC is valence isoelectronic with C2, they have different ground states. The coupling diagrams below show the 3Π ground state of SiC and the 1Σ+ ground state of C2.

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