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Communication
Nonorthogonal Dilithium-1,3-biborataallenes Containing Planar-Tetracoordinate Carbon Atoms
Article first published online: 10 JUL 2001
DOI: 10.1002/1521-3773(20010716)40:14<2662::AID-ANIE2662>3.0.CO;2-V
© 2001 WILEY-VCH Verlag GmbH, Weinheim, Fed. Rep. of Germany
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Additional Information
How to Cite
Sahin, Y., Hartmann, M., Geiseler, G., Schweikart, D., Balzereit, C., Frenking, G., Massa, W. and Berndt, A. (2001), Nonorthogonal Dilithium-1,3-biborataallenes Containing Planar-Tetracoordinate Carbon Atoms . Angew. Chem. Int. Ed., 40: 2662–2665. doi: 10.1002/1521-3773(20010716)40:14<2662::AID-ANIE2662>3.0.CO;2-V
Publication History
- Issue published online: 10 JUL 2001
- Article first published online: 10 JUL 2001
- Manuscript Revised: 5 APR 2001
- Manuscript Received: 22 JAN 2001
- Abstract
- Article
- References
- Cited By
Keywords:
- anions;
- boron;
- coordination chemistry;
- density functional calculations;
- steric hindrance
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Deviations of up to 36° from the orthogonality of the planes of the terminal B atoms of the allene skeleton and their neighbors (ipso-C atoms) are observed in tetraaryl-1,3-diborataallenes of contact-ion triples 1. The unusual geometries are caused by steric hindrance between ortho-methyl groups, which is induced by interactions of the lithium counterions with the π electrons of the aryl substituents, as well as by small barriers to planarization of 1,3-diborataallenes. Ar=for example, 2,3,5,6-tetramethylphenyl.