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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Alkali metal complexes of sterically hindered mono- and di-carbanions containing Si-O bonds
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Alkali metal complexes of sterically hindered mono- and di-carbanions containing Si-O bonds

机译:含有Si-O键的位阻一碳双和二碳双的碱金属配合物

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The oxygen-bridged,silicon-substituted alkane {(Me_3Si)_2CH(SiMe_2)}_2O (1) may be prepared by the reaction of {(Me_3Si)_2CH}Li with ClSiMe_2OSiMe_2Cl in refluxing THE Similarly,the alkane {(Me_3Si)(Me_2MeOSi)CH(SiMe_2CH_2)}_2 (2) is readily accessible from the reaction between {(Me_3Si)(Me_2MeOSi)CH}Li and ClSiMe_2CH_2CH_2SiMe_2Cl under the same conditions.Compound 1 reacts with two equivalents of MeK to give the polymeric complex [[{(Me_3Si)_2C(SiMe_2)}_2O]K_2(OEt_2)]_(infinity) [5(OEt_2)] after recrystallisation.Treatment of 2 with two equivalents of either MeLi or MeK gives the corresponding complexes [{(Me_3Si)(Me_2MeOSi)C(SiMe_2CH_2)}_2Li][Li(DME)_3] [7(DME)_3] and [{(Me_3Si)(Me_2MeOSi)C(SiMe_2CH_2)}_2K_2]_n (8),respectively,after recrystallisation.Treatment of the alkane (Me_3Si)_2(Me_2MeOSi)CH with one equivalent of MeK gives the polymeric complex [{(Me_3Si)_2(Me_2MeOSi)C}K]_(infinity) (3).These compounds have been identified by ~1H and ~(13)C{~1H} NMR spectroscopy and elemental analyses and compounds 5(OEt_2),7(DME)_3 and 3 have been further characterised by X-ray crystallography.Compound 7(DME)_3 crystallises as a solvent-separated ion pair,whereas 5(OEt_2) and 3 adopt polymeric structures in the solid state.
机译:氧桥接的硅取代的烷烃{(Me_3Si)_2CH(SiMe_2)} _ 2O(1)可以通过{{Me_3Si)_2CH} Li与ClSiMe_2OSiMe_2Cl在回流下的反应来制备。同样,烷烃{{Me_3Si)(在相同条件下,{{Me_3Si)(Me_2MeOSi)CH} Li与ClSiMe_2CH_2CH_2SiMe_2Cl之间的反应很容易获得Me_2MeOSi)CH(SiMe_2CH_2)} _ 2(2)。化合物1与两当量的MeK反应生成聚合物络合物[[重结晶后{(Me_3Si)_2C(SiMe_2)} _ 2O] K_2(OEt_2)] _(无穷大)[5(OEt_2)]。用两个当量的MeLi或MeK处理2得到相应的络合物[{(Me_3Si)( Me_2MeOSi)C(SiMe_2CH_2)} _ 2Li] [Li(DME)_3] [7(DME)_3]和[{(Me_3Si)(Me_2MeOSi)C(SiMe_2CH_2)} _ 2K_2] _n(8),分别在重结晶后处理。烷烃(Me_3Si)_2(Me_2MeOSi)CH与一当量的MeK的合成得到聚合物络合物[{(Me_3Si)_2(Me_2MeOSi)C} K] _ [无穷大)(3)。这些化合物已通过〜1H和〜(13)C {〜1H} NMR光谱和元素经过分析,化合物5(OEt_2),7(DME)_3和3通过X射线晶体学进一步表征。化合物7(DME)_3结晶为溶剂分离的离子对,而5(OEt_2)和3采用聚合物固态结构。

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