Isolation and characterization of bis(silylene)-stabilized antimony(I) and bismuth(I) cations.

Isolation and characterization of bis(silylene)-stabilized antimony(I) and bismuth(I) cations.
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DOI:
10.1038/s41467-023-38606-2
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发表时间:
2023-05-23
影响因子:
16.6
通讯作者:
Mo, Zhenbo
Mo, Zhenbo
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Wang, Xuyang;Lei, Binglin;Zhang, Zhaoyin;Chen, Ming;Rong, Hua;Song, Haibin;Zhao, Lili;Mo, Zhenbo

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第15族单价阳离子L2 Pn+(L = σ-给体配体,Pn = N、P、As、Sb、Bi)由于其不寻常的电子结构和不断增长的合成潜力而引起了实验和理论上的广泛兴趣。本文中,我们描述了由双(亚甲硅烷基)配体[(TBDSi 2)Pn][BArF 4](TBD = 1,8,10,9-三氮杂硼萘烷; ArF = 3,5-CF 3-C6 H 3; Pn = Sb,(2); Bi,(3))支撑的一族锑(I)和铋(I)阳离子的合成。2和3的结构已明确其特征在于光谱和X射线衍射分析和DFT计算。它们具有双配位的Sb和Bi原子,表现出两个孤对电子。2和3与三氟甲磺酸甲酯的反应为制备双阳离子锑(III)和铋(III)甲基配合物提供了一条途径。化合物2和3用作第6族金属(Cr、Mo)的2 e供体,产生离子锑和铋金属羰基络合物6-9。四环酮具有独特的电子性质和作为可溶性分子同素异形体的潜力,但迄今为止,四环酮同系物的化学性质仍有待研究。在这里,作者描述了一个家庭的锑(I)和铋(I)的阳离子支持的双甲硅烷基配体的合成,并探讨其反应性。
Monovalent group 15 cations L2Pn + (L = σ-donor ligands, Pn = N, P, As, Sb, Bi) have attracted significant experimental and theoretical interest because of their unusual electronic structures and growing synthetic potential. Herein, we describe the synthesis of a family of antimony(I) and bismuth(I) cations supported by a bis(silylene) ligand [(TBDSi2)Pn][BArF4] (TBD = 1, 8, 10, 9-triazaboradecalin; ArF = 3,5-CF3-C6H3; Pn = Sb, (2); Bi, (3)). The structures of 2 and 3 have been unambiguously characterized spectroscopically and by X-ray diffraction analysis and DFT calculations. They feature bis-coordinated Sb and Bi atoms which exhibit two lone pairs of electrons. The reactions of 2 and 3 with methyl trifluoromethane sulfonate provide a approach for the preparation of dicationic antimony(III) and bismuth(III) methyl complexes. Compounds 2 and 3 serve as 2e donors to group 6 metals (Cr, Mo), giving rise to ionic antimony and bismuth metal carbonyl complexes 6–9. Tetrylones show unique electronic properties and display potantial as soluble molecular allotropes, but until now, the chemistry of Tetrylone homologs remains underexplored. Here, the authors describe the synthesis of a family of antimony(I) and bismuth(I) cations supported by a bis silylene ligand and explore their reactivity.
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