Synthesis and properties of 1,3-Bis(2,6-diisopropylphenyl)-2-(trimethylstannyl)- 2,3-dihydro-1H-1,3,2-diazaborole
| Autor: | Jens Michael Breunig, Michael Bolte, Hans-Wolfram Lerner, Vasco Thiel, Frauke Schödel, Matthias Wagner |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Zeitschrift für Naturforschung B. 72:747-752 |
| ISSN: | 1865-7117 0932-0776 |
| Popis: | 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; δ P=364.5, –29.4; 1 J P(2),P(3)=–509.8 Hz, 1 J P(1),P(2)=–434.3 Hz, 2 J P(1),P(3)=–3.7 Hz, 3 J P(1),P(4)=178.9 Hz) and the triphosphenide Li[{HC(Dipp)N}2B–PPP–B{N(Dipp)CH}2] (δ P=665.1, 175.4; 1 J P,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. |
| Databáze: | OpenAIRE |
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