NDLI: Radical Exchanges and Structural Transformations on the Iron Carbonyl-Bulky Tin Cluster Complex, Fe$_{2}$(μ-SnBu 2 t )$_{2}$(CO)$_{8}$ by Solvents Toluene, Xylenes and Ethylbenzene

Content Provider	SpringerLink
Author	Zhu, Lei Yempally, Veeranna Isrow, Derek Pellechia, Perry J. Captain, Burjor
Copyright Year	2012
Abstract	The reaction of Fe$_{2}$(CO)$_{9}$ and Bu 3 t SnH yielded the bimetallic cluster complexes Fe$_{2}$(μ-SnBu 2 t )$_{2}$(CO)$_{8}$, 1, and Fe$_{4}$(μ$_{4}$-Sn)(μ-SnBu 2 t )$_{2}$(CO)$_{16}$, 3. Compound 3 contains two Fe$_{2}$(CO)$_{8}$(μ-SnBu 2 t ) groups held together by a central quadruply bridging tin atom, giving an overall bow-tie structure for the one tin and four iron atoms. Refluxing compound 1 in toluene solvent affords the complex Fe$_{2}$[μ-SnBu$^{t}$(CH$_{2}$Ph)]$_{2}$(CO)$_{8}$, 4, where two of the Bu$^{t}$ groups in 1 have been replaced with benzyl groups, as a result of selective benzylic C–H bond activation of solvent toluene. Similarly refluxing compound 1 in ortho-, meta- and para-xylene solvents gives the complexes where two, three and four of the Bu$^{t}$ groups in 1 have been replaced by the respective xylyl groups. Compound 1 also reacts with ethylbenzene to furnish the complex Fe$_{2}$[μ-SnBu$^{t}$(MeCHPh)]$_{2}$(CO)$_{8}$, 14, where two of the Bu$^{t}$ groups in 1 have been replaced as a result of the benzylic C–H activation of ethylbenzene. A mechanism based on a radical pathway is proposed for the selective C–H bond activation by 1.
Starting Page	627
Ending Page	648
Page Count	22
File Format	PDF
ISSN	10407278
Journal	Journal of Cluster Science
Volume Number	23
Issue Number	3
e-ISSN	15728862
Language	English
Publisher	Springer US
Publisher Date	2012-02-25
Publisher Place	Boston
Access Restriction	Subscribed
Subject Keyword	Tin Iron Bimetallic clusters C–H activation H atom abstraction Toluene Xylene Ethylbenzene Physical Chemistry Inorganic Chemistry Catalysis
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Biochemistry Chemistry Materials Science

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