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[Bis(trimethylsilyl)methylen](diisopropylamino)boran: ein Allen-homologes N=B=C-System (1987)

Boese, Roland ; Paetzold, Peter ; Tapper, Alexander

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 120 (1987), S. 1069-1071

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ISSN: 0009-2940

Keywords: Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: [Bis(trimethylsilyl) methylene] (diisopropylamino) borane: an Allene-Type N = B = C SystemThe title compound iPr2N=B=C(SiMe3)2 (4) is formed as a storable colourless liquid by the elimination of FSiMe3 from F-(iPr2N)B-C(SiMe3)3 (3) at 520°C. The compounds O=CHPh and Me3SiN3 are added to the B=C bond of 4 to give the [2 + 2] cycloaddition product 5 and the [2 + 3] cycloaddition product 6, respectively. The alkylideneaminoborane 4 crystallizes in the space group P21/n. Perpendicular planes through C2NB and BCSi2 define an allene-type structure with a linear N=B=C skeleton, bond lengths 136.3 (N=B) and 139.1 pm (B=C).

Additional Material: 1 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/cber.19871200631

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