Volume 7, Issue 1 pp. 57-65

Reaction of mercury (II) dibromide with tris(n-butyl) phosphine telluride: Formation of an unusual (Hg Te)3 ring system

Ling Huang

Corresponding Author

Ling Huang

Department of Chemistry, Texas A&M University, College Station, TX 77843-3255

Department of Chemistry, Texas A&M University, College Station, TX 77843-3255Search for more papers by this author
Ralph A. Zingaro

Ralph A. Zingaro

Department of Chemistry, Texas A&M University, College Station, TX 77843-3255

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Edward A. Meyers

Edward A. Meyers

Department of Chemistry, Texas A&M University, College Station, TX 77843-3255

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Joseph H. Reibenspies

Joseph H. Reibenspies

Department of Chemistry, Texas A&M University, College Station, TX 77843-3255

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Abstract

Tris(n-butyl)phosphine telluride (R3PTe) yields, with HgBr2 from acetone solution, a very thermally and air sensitive crystalline solid. This solid has been identified as (HgBr2)4 · (TePR3)3. X-ray diffraction analysis reveals that this compound contains a dimeric cation, [(HgTePR3)3Br5]2−2, in which each unit is characterized by a six-membered ring made of alternating bonds between mercury and tellurium. The counter ion is a di-nuclear anion [Hg2Br0]2−. The crystal belongs to the triclinic system, P1 group with a = 12.206(9) A, b = 17.613(10) A, c = 18.065(9) A, and Z = 2. The preparation of this new heterocyclic system and its decomposition under different conditions into Hg3Te2Br2 or HgTe are presented. © 1996 John Wiley & Sons, Inc.

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