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Modification of cobalt bis(dicarbollide) ions with nitrile groups on carbon atoms: a unique low-temperature skeletal rearrangement due to the specific electron-donor character of CN substitution
Dalton Transactions ( IF 3.5 ) Pub Date : 2024-11-01 , DOI: 10.1039/d4dt02588a
Ece Zeynep Tüzün, Drahomír Hnyk, Dmytro Bavol, Miroslava Litecká, Jindřich Fanfrlík, Bohumír Grűner

Herein, we report on the synthesis and stereochemistry of mono- and isomeric dinitrile derivatives of [(1,2-C2B9H11)2-3,3′-Co] ions. The shape and electronic properties of CN groups can apparently surmount the strain associated with the substitution of two vicinal carbon positions. Owing to electron donation to the cage, this results in a substituent-induced rearrangement of one of the carbon atoms to the upper pentagonal ring. The molecular structure of this isomer was confirmed using sc-XRD and DFT chemical computations.

中文翻译:


碳原子上腈基团对钴双(二羧绿)离子的修饰:由于 CN 取代的特定电子供体特性,一种独特的低温骨架重排



在此,我们报道了 [(1,2-C2B9H112-3,3′-Co] 离子的单异构二腈衍生物的合成和立体化学。CN 基团的形状和电子性质显然可以克服与两个邻近碳位置取代相关的应变。由于电子捐赠到笼中,这导致其中一个碳原子被取代基诱导重排到上五边形环。使用 sc-XRD 和 DFT 化学计算确认了这种异构体的分子结构。
更新日期:2024-11-01
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