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Issue 27, 2009
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1,1- and 1,2-isomers of the diborane(4) compound B2{1,2-(NH)2C6H4}2 and a TCNQ Co-crystal of the 1,1-isomer

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Abstract

The synthesis and X-ray crystal structures of the diborane(4) isomers 1,1-B2{1,2-(NH)2C6H4}2 and 1,2-B2{1,2-(NH)2C6H4}2 are described together with the results of quantum chemical calculations which shed light on their relative stabilities and degree of aromaticity. Spectroscopic data are also provided for both isomers of the 4-methyl aryl derivative. The compound 1,1-B2{1-O-2-(NH)C6H4}2 has also been prepared and structurally characterised but no evidence was obtained for the corresponding 1,2-isomer. The compound 1,1-B2{1,2-(NH)2C6H4}2 forms a co-crystal with TCNQ, the structure of which is also reported.

Graphical abstract: 1,1- and 1,2-isomers of the diborane(4) compound B2{1,2-(NH)2C6H4}2 and a TCNQ Co-crystal of the 1,1-isomer

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Article information


Submitted
10 Dec 2008
Accepted
31 Mar 2009
First published
20 May 2009

Dalton Trans., 2009, 5348-5354
Article type
Paper

1,1- and 1,2-isomers of the diborane(4) compound B2{1,2-(NH)2C6H4}2 and a TCNQ Co-crystal of the 1,1-isomer

M. A. M. Alibadi, A. S. Batsanov, G. Bramham, J. P. H. Charmant, M. F. Haddow, L. MacKay, S. M. Mansell, J. E. McGrady, N. C. Norman, A. Roffey and C. A. Russell, Dalton Trans., 2009, 5348
DOI: 10.1039/B822225H

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