共价金属配合物的环磷酰胺基团转移:金属转化的对比途径

IF 4.2 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Eric S. Yang , Jose M. Goicoechea
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引用次数: 0

摘要

我们描述了金(I)氰化物配合物、金(IDipp)(CP) (IDipp = 1,3-二(2,6-二异丙基苯基)咪唑-2-基)与低氧化态主基和过渡金属配合物之间的两种不同的金属转化反应。观察到的反应性突出了cyaphide离子的伪卤化物特征。氰化物离子(C≡N−)是一种典型的伪卤化物,以其强的σ给体性质而闻名。与其他伪卤化物一样,它可以作为二聚体(氰)存在,形成离子盐,在配位配合物中作为配体,并在有机化学中作为官能团(在腈和异腈中)。氰化物离子(C≡P−)是氰化物离子的重类似物,也被描述为伪卤化物,作为酸(HCP)的共轭碱存在,4作为金属配合物的配体存在,5作为有机磷酸烷(RCP)的官能团存在虽然含有氰化物和卤化物离子的无机化合物很常见,但含有氰化物离子的无机化合物却很罕见;目前只存在少量金属环磷酰胺配合物的例子,没有已知的二元环磷酰胺盐的例子。这在很大程度上是由于缺乏合成含虫胺分子的途径。近年来,我们开发了一种更通用的方法,利用具有高离子Mg-CP键的镁(II) cyaphide试剂,通过cyaphide转移合成金属cyaphide配合物。11,15,16这些试剂的行为类似于格氏试剂,并且能够通过盐分解将cyaphide离子转移到金属中心。最近,m ller和他的同事发现了另一种生成金属cyaphido配合物的途径,证明芳基磷酸烷具有类似芳基卤化物/氰化物的伪卤素反应性,并在铂(0)中心发生氧化加成反应17我们最近对金(I) cyaphide配合物Au(IDipp)(CP) (A)的研究表明,由于其高共价的Au - CP键,它的反应类似于金属磷酸烷。13,18我们推断,这也可能引起伪卤化物行为,允许cyaphide转移到其他富电子亲核试剂。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Cyaphide group transfer from covalent metal complexes: contrasting pathways to transmetallation†

Cyaphide group transfer from covalent metal complexes: contrasting pathways to transmetallation†
We describe two contrasting transmetallation reactions between the gold(i) cyaphide complex, Au(IDipp)(CP) (IDipp = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene), and low oxidation state main-group and transition-metal complexes. The reactivity observed highlights the pseudo-halide character of the cyaphide ion.
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来源期刊
Chemical Communications
Chemical Communications 化学-化学综合
CiteScore
8.60
自引率
4.10%
发文量
2705
审稿时长
1.4 months
期刊介绍: ChemComm (Chemical Communications) is renowned as the fastest publisher of articles providing information on new avenues of research, drawn from all the world''s major areas of chemical research.
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