Diruthenium ¦Ò-iminophenylacetylide complexes from on-complex Schiff base condensation

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• 作者：Steven P.  ; Cummings ; Alex R.  ; Geanes ; Phillip E.  ; Fanwick ; Anastasia  ; Kharlamova ; Tong  ; Ren  ; ;   ; ^{tren@purdue.edu}
• 关键词：Diruthenium ; Acetylide ; Imine ; Aldehyde
• 刊名：Journal of Organometallic Chemistry
• 出版年：2011
• 出版时间：15 December 2011
• 年：2011
• 卷：696
• 期：25
• 页码：3955-3960
• 全文大小：676 K

文摘

Six diruthenium(II,III) compounds of the formula Ru₂(ap)₄?CC¨CC₆H₄-4-NCH?¡ä¨CC₆H₄¨CR) (ap as 2-anilinopyridinate, 3) and Ru₂(ap)₄?CC¨CC₆H₄?¨CNCH?¡ä¨CC₆H₄¨CR) (4), where R is H (a), Br (b) or CHO (c), were prepared from the condensation reactions between Ru₂(ap)₄(CC¨CC₆H₄?/3¨CNH₂) (1/2) and an appropriate aldehyde. X-ray structural studies of compounds 3a and 3b revealed minimal changes upon the formation of the imine bond in the coordination sphere of the Ru₂ core with respect to the parent compounds. Voltammetric measurements show that compounds 3a/b and 4a/b exhibit four one electron redox processes: an oxidation of Ru₂, two reductions of Ru₂, and a reduction of the imine group. Both compounds 3c and 4c also undergo a fourth reduction attributed to the aldehyde functional group.