Insertion of terminal alkyne into Pt–N bond of the square planar [PtI<sub>2</sub>(Me<sub>2</sub>phen)] complex
作者:Michele Benedetti、Federica De Castro、Vincenza Lamacchia、Concetta Pacifico、Giovanni Natile、Francesco P. Fanizzi
DOI:10.1039/c7dt03644b
日期:——
reactivity of [PtX2(Me2phen)] complexes (X = Cl, Br, I; Me2phen = 2,9-dimethyl-1,10-phenanthroline) with terminal alkynes has been investigated. Whereas the dichlorido species [PtCl2(Me2phen)] exhibits negligible reactivity, the bromido and iodido derivatives lead in short time to formation of five-coordinate Pt(II) complexes of the type [PtX2(Me2phen)(η2-CH≡CR)] (X = Br, I; R = Ph, n-Bu), in equilibrium
研究了[PtX 2(Me 2 phen)]配合物(X = Cl,Br,I; Me 2 phen = 2,9-二甲基-1,10-菲咯啉)与末端炔烃的反应性。尽管二氯键物种[PtCl 2(Me 2 phen)]的反应性可忽略不计,但溴和碘代衍生物在短时间内导致形成了[PtX 2(Me 2 phen)(η)的五配位Pt(II)配合物。2- CH≡CR)](X = Br,I; R = Ph,n-Bu),与起始试剂保持平衡。同样通过简单乙炔类似配合物,五坐标物质也可经历halido配体和形成瞬态正方形平面阳离子物质[PTX(我的解离2 phen)的(η 2 -CH≡CR)] +。后者可以进一步发展为一种不寻常的,微溶的方形平面产物,其中前一个末端炔烃被α-碳桥连一个Pt(II)核,并将其转化为C:C(H)(R)部分。Me 2 phen的两个N-供体。最终产物[PTX 2 κ 2 - N,C - (ż)