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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Synthesis and crystal structure of the two lithium hypersilylcuprates LiCu2[Si(SiMe3)(3)](3) and [Li-7((OBu)-Bu-t)(6)][Cu-2{Si(SiMe3)(3)}(3)]
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Synthesis and crystal structure of the two lithium hypersilylcuprates LiCu2[Si(SiMe3)(3)](3) and [Li-7((OBu)-Bu-t)(6)][Cu-2{Si(SiMe3)(3)}(3)]

机译:两种高硅酸锂铜盐LiCu2 [Si(SiMe3)(3)](3)和[Li-7((OBu)-Bu-t)(6)] [Cu-2 {Si(SiMe3)( 3)}(3)]

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摘要

The two hypersilylcuprates LiCu(2)Hyp(3) (2) and [Li-7((OBu)-Bu-t)(6)][Cu(2)Hyp(3)] (3) (Hyp = Si(SiMe3)(3)) were synthesized by reactions of unsolvated lithium hypersilanide, Li-Hyp with hypersilylcopper and (CuOBu)-Bu-t, respectively. Both contain the novel A-frame trihypersilyldicuprate anion [Cu2- Hyp(3)](-). In the former case a molecular compound is produced containing intimate ion pairs. In the latter case the cuprate anion and the unique large [Li-7((OBu)-Bu-t)(6)](+) cation form a salt-like compound, only sparingly soluble in unpolar solvents. According to NBO analyses the bonding within the trihypersilyldicuprate moiety is best described by interaction of a bridging lewis-basic hypersilanide anion with two lewis-acidic hypersilyl copper fragments. [References: 29]
机译:两个高甲硅烷基铜酸盐LiCu(2)Hyp(3)(2)和[Li-7((OBu)-Bu-t)(6)] [Cu(2)Hyp(3)](3)(Hyp = Si( SiMe3)(3))分别通过未溶剂化的高硅化锂,Li-Hyp与高硅化铜和(CuOBu)-Bu-t反应合成。两者都包含新颖的A框架三氢硅二双酸盐阴离子[Cu2- Hyp(3)](-)。在前一种情况下,会产生一种包含紧密离子对的分子化合物。在后一种情况下,铜酸盐阴离子和独特的大[Li-7((OBu)-Bu-t)(6)](+)阳离子形成盐样化合物,仅微溶于非极性溶剂。根据NBO分析,最好是通过桥接路易斯-碱性高硅烷基化物阴离子与两个路易斯-酸性高硅烷基铜片段的相互作用来最好地描述三高甲硅烷基二双丙酮酸酯部分内的键合。 [参考:29]

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