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首页> 外文期刊>Chemistry: A European journal >Pentasilatricyclo[2.1.0.02,5]pentane and Its Anion
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Pentasilatricyclo[2.1.0.02,5]pentane and Its Anion

机译：五硅三环[2.1.0.02,5]戊烷及其阴离子

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In their comprehensive review, Michl and co-workers listed bicycloACHTUNGTRENUNG[1.1.1]pentanes, [1.1.1]propellanes and tricyclo[2.1.0.02,5]pentanes among the most highly strained polycyclic compounds, otherwise known as cages.[1] The nonclassical nature and unusual hybridization mode of the bridging bonds in [1.1.1]propellanes and tricyclo[2.1.0.02,5]pentanes, sharply deviating from the normal sp3 states, as well as the nontrivial interbridgehead nonbonding interaction in bicycloACHTUNGTRENUNG[1.1.1]pentanes, make them very attractive targets for both experimental and computational pursuits. Even though the field of organic derivatives of such cage compounds is rather well investigated from both synthetic and theoretical sides, the field of their analogues of the heavy Group 14 elements is still largely unknown. Thus, for example, only four stable heavy [1.1.1]propellanes of the type R6E5 (E=heavy Group 14 element) have been reported to date, representing examples of pentastanna-, digermatristanna- and pentagermaACHTUNGTRENUNG[1.1.1]propellanes.[2] As for the heavy tricyclo[2.1.0.02,5]pentanes, the only known stable representative featuring an extremely long Ge C bridge bond was reported by us several years ago.[3] The latter compound revealed structural peculiarities that are sharply distinctive from those of its organic counterparts.[4] However, the particularly ttractive all heavy Group 14 element-consisting analogues f tricyclo[2.1.0.02,5]pentane were still unknown prior to our studies,[5] and in this communication we wish to report the synthesis of the first pentasilatricyclo 2.1.0.02,5]pentane derivative and its subsequent reduction to produce a rather unusual anionic derivative manifesting a number of unprecedented structural features.
机译：在全面审查中，Michl及其同事将双环ACHTUNGTRENUNG [1.1.1]戊烷，[1.1.1]丙炔和三环[2.1.0.02,5]戊烷列为应变最大的多环化合物，也称为笼。[1] ] [1.1.1]螺旋桨和三环[2.1.0.02,5]戊烷中桥键的非经典性质和异常杂交模式与正常的sp3状态以及双环ACHTUNGTRENUNG [1.1。中的非平凡桥间非键相互作用]明显不同。 1]戊烷，使其成为进行实验和计算的极具吸引力的目标。即使从合成和理论两方面都很好地研究了这种笼状化合物的有机衍生物领域，但其重于第14组元素的类似物的领域仍是未知之数。因此，例如，迄今为止，迄今仅报道了四种稳定的R6E5型重[1.1.1]螺旋桨（E =重族14元素），代表了戊四烯-，双香豆蔻-和戊二酮ACHTUNGTRENUNG [1.1.1]螺旋桨的实例。 [2]至于重质三环[2.1.0.02,5]戊烷，几年前我们报道了唯一已知的具有极长Ge C桥键的稳定代表。[3]后一种化合物的结构特点与有机化合物明显不同。[4]然而，在我们的研究之前，尚不清楚特别吸引人的全重的由第14组元素组成的类似物三环[2.1.0.02,5]戊烷，[5]，在此通报中，我们希望报告第一个五环三环2.1的合成。 0.02，5]戊烷衍生物及其随后的还原以产生相当不寻常的阴离子衍生物，其表现出许多前所未有的结构特征。

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