A stable silicon-based allene analogue with a formally sp-hybridized silicon atom.
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| Title: | A stable silicon-based allene analogue with a formally sp-hybridized silicon atom. |
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| Authors: | Ishida, S., Iwamoto, T., Kabuto, C., Kira, M. |
| Source: | Nature. 2/13/2003, Vol. 421 Issue 6924, p725. 3p. |
| Subjects: | Silicon, X-ray crystallography |
| Abstract: | Carbon chemistry exhibits a rich variety in bonding patterns, with homo- or heteronuclear multiple bonds involving sp-hybridized carbon atoms as found in molecules such as acetylenes, nitriles, allenes and carbon dioxide. Carbon's heavier homologues in group 14 of the periodic table-including silicon, germanium and tin-were long thought incapable of forming multiple bonds because of the less effective pp-pp orbital overlap involved in the multiple bonds. However, bulky substituents can protect unsaturated bonds and stabilize compounds with formally sp-hybridized heavy group-14 atoms: stable germanium, tin and lead analogues of acetylene derivatives and a marginally stable tristannaallene have now been reported. However, no stable silicon compounds with formal sp-silicon atoms have been isolated. Evidence for the existence of a persistent disilaacetylene and trapping of transient 2-silaallenes and other X = Si = X' type compounds (X, X' = O, CR2, NR, and so on) are also known, but stable silicon compounds with formally sp-hybridized silicon atoms have not yet been isolated. Here we report the synthesis of a thermally stable, crystalline trisilaallene derivative containing a formally sp-hybridized silicon atom. We find that, in contrast to linear carbon allenes, the trisilaallene is significantly bent. The central silicon in the molecule is dynamically disordered, which we ascribe to ready rotation of the central silicon atom around the molecular axis. [ABSTRACT FROM AUTHOR] |
| Copyright of Nature is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 9186646 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: A stable silicon-based allene analogue with a formally sp-hybridized silicon atom. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ishida%2C+S%2E%22">Ishida, S.</searchLink><br /><searchLink fieldCode="AR" term="%22Iwamoto%2C+T%2E%22">Iwamoto, T.</searchLink><br /><searchLink fieldCode="AR" term="%22Kabuto%2C+C%2E%22">Kabuto, C.</searchLink><br /><searchLink fieldCode="AR" term="%22Kira%2C+M%2E%22">Kira, M.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nature%22">Nature</searchLink>. 2/13/2003, Vol. 421 Issue 6924, p725. 3p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Silicon%22">Silicon</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+crystallography%22">X-ray crystallography</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Carbon chemistry exhibits a rich variety in bonding patterns, with homo- or heteronuclear multiple bonds involving sp-hybridized carbon atoms as found in molecules such as acetylenes, nitriles, allenes and carbon dioxide. Carbon's heavier homologues in group 14 of the periodic table-including silicon, germanium and tin-were long thought incapable of forming multiple bonds because of the less effective pp-pp orbital overlap involved in the multiple bonds. However, bulky substituents can protect unsaturated bonds and stabilize compounds with formally sp-hybridized heavy group-14 atoms: stable germanium, tin and lead analogues of acetylene derivatives and a marginally stable tristannaallene have now been reported. However, no stable silicon compounds with formal sp-silicon atoms have been isolated. Evidence for the existence of a persistent disilaacetylene and trapping of transient 2-silaallenes and other X = Si = X' type compounds (X, X' = O, CR2, NR, and so on) are also known, but stable silicon compounds with formally sp-hybridized silicon atoms have not yet been isolated. Here we report the synthesis of a thermally stable, crystalline trisilaallene derivative containing a formally sp-hybridized silicon atom. We find that, in contrast to linear carbon allenes, the trisilaallene is significantly bent. The central silicon in the molecule is dynamically disordered, which we ascribe to ready rotation of the central silicon atom around the molecular axis. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nature is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1038/nature01380 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 3 StartPage: 725 Subjects: – SubjectFull: Silicon Type: general – SubjectFull: X-ray crystallography Type: general Titles: – TitleFull: A stable silicon-based allene analogue with a formally sp-hybridized silicon atom. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ishida, S. – PersonEntity: Name: NameFull: Iwamoto, T. – PersonEntity: Name: NameFull: Kabuto, C. – PersonEntity: Name: NameFull: Kira, M. IsPartOfRelationships: – BibEntity: Dates: – D: 13 M: 02 Text: 2/13/2003 Type: published Y: 2003 Identifiers: – Type: issn-print Value: 00280836 Numbering: – Type: volume Value: 421 – Type: issue Value: 6924 Titles: – TitleFull: Nature Type: main |
| ResultId | 1 |
