Linear- and Cyclo-Hexa(amino)hexaboranes: New Routes to Synthesis of B6 Chain and B6 Ring

IF 2.2 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR European Journal of Inorganic Chemistry Pub Date : 2024-10-08 DOI:10.1002/ejic.202400440

A. Wahid Mesbah, Armin Berndt, Meisam Soleimani, Werner Massa, Klaus Harms

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Abstract

In this work, a linear-hexaborane(8) B₆(NMe₂)₆(CH₂SiMe₃)₂ was synthesized using a new method. By replacing one chlorine atom of Cl₂B₃(NMe₂)₃ with CH₂SiMe₃ group, compound ClB₃(NMe₂)₃CH₂SiMe₃ was prepared. Reductive dehalogenative coupling of ClB₃(NMe₂)₃CH₂SiMe₃ led to linear-hexaborane(8). Moreover, the six-membered boron ring, cyclo-hexaborane B₆(NEt₂)₆ was synthesized by reductive dehalogenation of Br₂BNEt₂. The first linear-hexaborane(8) and cyclo-hexaborane B6(NEt₂)₆ crystal structures were fully characterized by X-ray structural analysis and ¹¹B, ¹H, and ¹³C NMR spectroscopy. While the B₁⋅⋅⋅B₆ chain in linear-hexaborane(8) is strongly twisted at all B−B bonds, the B₆ ring cyclo-hexaborane B₆(NEt₂)₆ has a chair conformation similar to cyclohexane.

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线性和环六（氨基）六硼烷：合成B6链和B6环的新途径

本文采用新方法合成了线性六硼烷(8)B6(NMe2)6(CH2SiMe3)2。用CH2SiMe3基团取代Cl2B3(NMe2)3的一个氯原子，制得化合物ClB3(NMe2)3CH2SiMe3。ClB3(NMe2)3CH2SiMe3还原脱卤偶联得到线性六硼烷(8)。以Br2BNEt2为原料，通过还原脱卤合成了六元硼环环六硼烷B6(NEt2)6。通过x射线结构分析和11B、1H、13C核磁共振光谱对第一线性-六硼烷(8)和环-六硼烷B6(NEt2)6晶体结构进行了全面表征。线性六硼烷(8)中的B1⋅⋅⋅B6链在所有B - B键上都是强扭的，而B6环六硼烷（NEt2）6具有类似环己烷的椅状构象。

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来源期刊

European Journal of Inorganic Chemistry 化学-无机化学与核化学

CiteScore

4.30

自引率

4.30%

发文量

419

审稿时长

1.3 months

期刊介绍： The European Journal of Inorganic Chemistry (2019 ISI Impact Factor: 2.529) publishes Full Papers, Communications, and Minireviews from the entire spectrum of inorganic, organometallic, bioinorganic, and solid-state chemistry. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies. The following journals have been merged to form the two leading journals, European Journal of Inorganic Chemistry and European Journal of Organic Chemistry: Chemische Berichte Bulletin des Sociétés Chimiques Belges Bulletin de la Société Chimique de France Gazzetta Chimica Italiana Recueil des Travaux Chimiques des Pays-Bas Anales de Química Chimika Chronika Revista Portuguesa de Química ACH—Models in Chemistry Polish Journal of Chemistry The European Journal of Inorganic Chemistry continues to keep you up-to-date with important inorganic chemistry research results.