...
首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Silver(I) complexes of 1,3-dialkyl-4,5-dimethylimidazol-2-ylidenes and their use as precursors for the synthesis of rhenium(V) NHC complexes
【24h】

Silver(I) complexes of 1,3-dialkyl-4,5-dimethylimidazol-2-ylidenes and their use as precursors for the synthesis of rhenium(V) NHC complexes

机译:1,3-二烷基-4,5-二甲基咪唑-2-亚烷基的银(I)配合物及其作为precursor(V)NHC配合物合成的前体

获取原文
获取原文并翻译 | 示例
           

摘要

Ag(BF4) reacts with N-heterocyclic carbenes (NHC) of the type 1,3-dialkyl-4,5-dimethylimidazol-2-ylidene (L-R = Me, Et, i-Pr) under formation of [Ag(L-R)(2)](+) Complexes [Ag(L-E1)(2)](BF4) and [Ag(L-i-(Pr))(2)](BF4) can be isolated from such procedures as airstable solids, while the methyl derivative decomposes rapidly in the reaction mixture. The Ag-carbenc bond lengths in [Ag(Li-Pr)(2)](BF4) are 2.08(1) angstrom. This is in accordance with the bonding situation in other Ag NHC complexes and does on its own not allow conclusions to be drawn concerning the bonding order or the reactivity of the compound. Reactions of [Ag(L-Et)(2)](BF4) with common rhenium(V) starting materials such as [ReOCl3(PPh3)2] or (NBU4)[ReOCl4] give the known Rev NHC complex [ReO2(L (Et))(4)](+). This transmetallation reaction represents a new approach to rheniurn or technetium NHC complexes which possess potential for applications in nuclear medicine.
机译:Ag(BF4)与1,3-二烷基-4,5-二甲基咪唑-2-亚烷基(LR = Me,Et,i-Pr)的N-杂环卡宾(NHC)反应,形成[Ag(LR) (2)](+)配合物[Ag(L-E1)(2)](BF4)和[Ag(Li-(Pr))(2)](BF4)可以从稳定的固体中分离出来,而甲基衍生物在反应混合物中迅速分解。 [Ag(Li-Pr)(2)](BF4)中的Ag-碳键长度为2.08(1)埃。这与其他Ag NHC配合物中的键合情况相符,并且本身不能得出关于化合物的键合顺序或反应性的结论。 [Ag(L-Et)(2)](BF4)与常见的((V)起始原料如[ReOCl3(PPh3)2]或(NBU4)[ReOCl4]的反应生成已知的Rev NHC络合物[ReO2(L) (Et))(4)](+)。这种金属转移反应代表了具有潜在核医学应用潜力的Rheniurn或NHC complex络合物的新方法。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号