Reaction of [Te6Fe8(CO)24]2- with Dihaloalkanes: A New Route to Organotellurium Complexes of Iron

Minghuey Shieh, Mei Huey Shieh

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40 Citations (Scopus)

Abstract

Organotellurium hexacarbonyldiiron complexes, Fe2(CO)6(μ-Te(CH2)nTe) (n = 1, n = 2, 2; n = 3, 3), are synthesized by the reaction of [Te6Fe8(CO)24]2- (1) with appropriate dihaloalkanes. When [Et4N]2[1] is treated with Br(CH2)2Br, an anionic cluster [Et4N] [BrTe2Fe2(CO)6] (4) is obtained. Clusters 2–4 were characterized by spectroscopic data and single-crystal X-ray analysis. Compound 2 crystallizes in the monoclinic space group P21/n with a = 7.194(1) Å, b = 13.179(4) Å, c = 14.644(3) Å, β = 91.57(2)°, V = 1387.9(6) Å3, and Z = 4. Compound 3 is isomorphous with 2: monoclinic, space group P21/n with a = 7.455(1) Å, b = 13.312(1) Å, c = 15.097(3) Å, β = 91.48(2)°, V = 1497.7(4) Å3, and Z = 4. Crystals of 4 are monoclinic, space group P21/n with a = 13.304(2) Å, b = 13.022(3) Å, c = 13.372(5) Å, β = 93.70(2)°, V = 2311.6(1) Å3, and Z = 4. Compound 2 or 3 displays a Te2Fe2 butterfly geometry with the Te atoms bridged by a –(CH2)n– (n = 2, 3) group while the anionic cluster 4 exhibits a Te2Fe2 tetrahedral core with one Te bonded to an external Br atom. The anionic 1 has been shown to be a source of the dianion, [Te2Fe2(CO)6]2-, and provides a useful reagent for the preparation of organotellurium hexacarbonyldiiron complexes, Fe2(CO)6(μ-Te(CH2)nTe).

Original languageEnglish
Pages (from-to)920-924
Number of pages5
JournalOrganometallics
Volume13
Issue number3
DOIs
Publication statusPublished - 1994 Mar 1

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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