Reactivity of [SeFe3(CO)9]2- with electrophiles: Formation of [SeFe2Ru3(CO)14]2-, [SeFe3(CO)9(μ-HgI)]-, Fe2(CO)6(μ-SeCHPhSe), and Se2Fe2(CO)6(μ-CH2)2

Minghuey Shieh, Yi Chou Tsai, Jiann Jang Cherng, Mei Huey Shieh, Horng Sun Chen, Chuen Her Ueng, Shie Ming Peng, Gene Hsiang Lee

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Abstract

The reactions of the tetrahedral cluster [SeFe3(CO)9]2- with some transition-metal complexes and organic halides were investigated. The mixed-metal cluster [Et4N]2[SeFe2-Ru3(CO)14] (1) was obtained from the reaction of [Et4N]2[SeFe3(CO)9] with Ru3(CO)12 in acetone. Further reaction of [Et4N]2[SeFe3(CO)9] with HgI2 produces the HgI-bridged cluster [Et4N][SeFe3(CO)9(μ-HgI)] (2). While [SeFe3(CO)9]2- reacts with CHPhCl2 to produce the CHPh-bridged cluster Fe2(CO)6(μ-SeCHPhSe) (3), treatment with CH2I2 forms the major product Se2Fe2(CO)6(μ-CH2)2 (4). Complex 1 displays an octahedral metal core with a μ4-Se atom and two carbonyl groups bridging the Ru-Ru and Ru-Fe bonds. Cluster 2 consists of a SeFe3 core with a HgI fragment bridging one Fe-Fe bond, and cluster 3 exhibits a Se2Fe2 butterfly geometry with the wingtip linked by a CHPh moiety. On the other hand, cluster 4 contains a planar Se2Fe2 moiety with two CH2 groups bridging the two Se-Fe bonds. Complexes 1-4 have been fully structurally characterized by spectroscopic methods and X-ray diffraction analyses. This paper describes the formation of four different types of clusters from the reactions of [SeFe3(CO)9]2- with electrophiles and discusses the role of [SeFe3(CO)9]2- and the incoming electrophiles.

Original languageEnglish
Pages (from-to)456-460
Number of pages5
JournalOrganometallics
Volume16
Issue number3
Publication statusPublished - 1997 Feb 4

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

Cite this

Shieh, M., Tsai, Y. C., Cherng, J. J., Shieh, M. H., Chen, H. S., Ueng, C. H., Peng, S. M., & Lee, G. H. (1997). Reactivity of [SeFe3(CO)9]2- with electrophiles: Formation of [SeFe2Ru3(CO)14]2-, [SeFe3(CO)9(μ-HgI)]-, Fe2(CO)6(μ-SeCHPhSe), and Se2Fe2(CO)6(μ-CH2)2. Organometallics, 16(3), 456-460.