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Zeitschrift für Naturforschung B

A Journal of Chemical Sciences


IMPACT FACTOR 2018: 0.961

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1865-7117
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Volume 72, Issue 10

Issues

Synthesis and properties of 1,3-Bis(2,6-diisopropylphenyl)-2-(trimethylstannyl)- 2,3-dihydro-1H-1,3,2-diazaborole

Frauke Schödel
  • Institut für Anorganische Chemie, Goethe-Universität Frankfurt am Main, 60438 Frankfurt am Main, Germany
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/ Jens M. Breunig
  • Institut für Anorganische Chemie, Goethe-Universität Frankfurt am Main, 60438 Frankfurt am Main, Germany
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/ Vasco Thiel
  • Institut für Anorganische Chemie, Goethe-Universität Frankfurt am Main, 60438 Frankfurt am Main, Germany
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/ Michael Bolte
  • Institut für Anorganische Chemie, Goethe-Universität Frankfurt am Main, 60438 Frankfurt am Main, Germany
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/ Matthias Wagner
  • Institut für Anorganische Chemie, Goethe-Universität Frankfurt am Main, 60438 Frankfurt am Main, Germany
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/ Hans-Wolfram Lerner
  • Corresponding author
  • Institut für Anorganische Chemie, Goethe-Universität Frankfurt am Main, Max-von-Laue-Straße 7, 60438 Frankfurt am Main, Germany, Fax: +49-69-79829260
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Published Online: 2017-09-27 | DOI: https://doi.org/10.1515/znb-2017-0122

Abstract

The diazaborole Me3Sn–B{N(Dipp)CH}2 (1; B{N(Dipp)CH}2=N,N′-bis(2,6-diisopropylphenyl)-2,3-dihydro-1H-1,3,2-diazaborolyl) was prepared by the reaction of Me3SnCl with one equivalent of Li[B{N(Dipp)CH}2]. Single crystals of 1 were obtained from hexane (triclinic space group P1̅). The diazaborole 1 was mono-deprotonated at the heterocycle upon treatment with Li[Me] to give product 2. In contrast to Li[B{N(Dipp)CH}2] which reacted with P4 to give the tetraphosphenediide Li2[{HC(Dipp)N}2B–P(1)P(2)P(3)P(4)–B{N(Dipp)CH}2] (3; δP=364.5, –29.4; 1JP(2),P(3)=–509.8 Hz, 1JP(1),P(2)=–434.3 Hz, 2JP(1),P(3)=–3.7 Hz, 3JP(1),P(4)=178.9 Hz) and the triphosphenide Li[{HC(Dipp)N}2B–PPP–B{N(Dipp)CH}2] (δP=665.1, 175.4; 1JP,P=500 Hz), the stannyl derivative 1 did not activate white phosphorus. The reaction of 1 with GaCl3 yielded either Me2ClSn–B{N(Dipp)CH}2 (4) or MeCl2Sn–B{N(Dipp)CH}2 (5) depending on the molar ratio of the reactants. The monochlorinated diazaborole Me2ClSn–B{N(Dipp)CH}2 was also obtained by the reaction of 1 with AsCl3.

Keywords: boryl anion; diazaborole; X-ray structure analysis

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About the article

Received: 2017-07-20

Accepted: 2017-08-09

Published Online: 2017-09-27

Published in Print: 2017-09-26


Citation Information: Zeitschrift für Naturforschung B, Volume 72, Issue 10, Pages 747–752, ISSN (Online) 1865-7117, ISSN (Print) 0932-0776, DOI: https://doi.org/10.1515/znb-2017-0122.

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