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首页> 外文期刊>Chemistry: A European journal >Stannylium ions, a tin(II) arene complex, and a tin dication stabilized by weakly coordinating anions
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Stannylium ions, a tin(II) arene complex, and a tin dication stabilized by weakly coordinating anions

机译：锡离子，锡（II）芳烃络合物和弱配位阴离子稳定的锡离子

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摘要

The reactivity of aryl-substituted stannylenes, Ar_2Sn (4), towards silylarenium borates, [R_3SiArH][B(C_6F _5)_4] (3), was investigated. The reaction with 2,3,4-trimethyl-6-tert-butylphenyl (mebp)-substituted stannylene gave silyl-substituted stannylium ions 2 a,b, which were characterized by NMR spectroscopy supported by the results of quantum-mechanical computations of molecular structures and magnetic properties. The tri-iso-propylphenyl- substituted stannylium ions 2 c,d undergo a decomposition reaction in toluene to give the dicationic tin-arene complex [Sn(C_7H_8) _3]~(2+) (5) in the form of the [B(C_6F _5)_4] salt in high yields. The 5[B(C_6F _5)_4]_2 salt was identified by single crystal X-ray diffraction analysis and by M?ssbauer spectroscopy. The bonding situation was investigated by using natural bond orbital (NBO) and quantum theory of atoms in molecules (QTAIM) calculations. The substitution of the weakly coordinating borate anion by the carboranate [CB_(11)H _6Br_6]~- results in replacement of the toluene ligands and formation of tin(II) carboranate with only weak Sn ~(2+)-anion interactions as suggested by the solid-state structure of the isolated salt.
机译：研究了芳基取代的亚锡烷基Ar_2Sn（4）对甲硅烷基硼酸酯[R_3SiArH] [B（C_6F _5）_4]（3）的反应性。与2,3,4-三甲基-6-叔丁基苯基（Mebp）取代的亚锡基反应生成甲硅烷基取代的苯乙烯离子2 a，b，其通过NMR光谱学表征，得到分子的量子力学计算结果的支持结构和磁性能。三异丙基苯基取代的苯乙烯离子2 c，d在甲苯中发生分解反应，以[B]的形式生成二价锡-芳烃络合物[Sn（C_7H_8）_3]〜（2+）（5） （C_6F _5）_4]高产盐。通过单晶X射线衍射分析和Msssbauer光谱法鉴定了5 [B（C_6F _5）_4] _2盐。通过使用自然键轨道（NBO）和分子中的原子量子理论（QTAIM）计算来研究键合情况。弱配位的硼酸根阴离子被氨基甲酸酯[CB_（11）H _6Br_6]〜-取代，从而导致甲苯配体的置换和氨基甲酸锡（II）的形成，仅具有弱的Sn〜（2 +）-阴离子相互作用通过分离盐的固态结构。

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