title: An Isolable Radical Anion of an Organosilicon Cluster Containing Only σ Bonds.
abstract: The radical anion of octa-tert-butyloctasilacubane was generated and isolated. The EPR spectrum showed the satellites due to the tertiary (13)C nuclei of the eight tert-butyl groups. The X-ray crystallographic analysis showed that the Si-Si bonds are shortened and the Si-C bonds are elongated compared with those of octa-tert-butyloctasilacubane. These results are well explained by the distribution of an unpaired electron in the singly occupied molecular orbital (SOMO).
authors.affiliation: Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515 (Japan).
authors.forename: Kyohei
authors.initials: K
authors.lastname: Otsuka
authors.affiliation: Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515 (Japan).
authors.forename: Naozumi
authors.initials: N
authors.lastname: Matsumoto
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578 (Japan). sishida@m.tohoku.ac.jp.
authors.forename: Shintaro
authors.initials: S
authors.lastname: Ishida
authors.affiliation: Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515 (Japan). kyushin@gunma-u.ac.jp.
authors.forename: Soichiro
authors.initials: S
authors.lastname: Kyushin
keywords: EPR spectroscopy; X-ray crystallographic analysis; octasilacubane; organosilicon clusters; radical anions