One-Dimensional Mercury Telluride Polymers: Synthesis and Structure of (Et4N)2Hg2Te4 and (Me4N)4Hg3Te7·(0.5en)

Sandeep S. Dhingra, Christopher J. Warren, Robert C. Haushalter, Andrew Bruce Bocarsly

Research output: Contribution to journalArticle

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Abstract

Two new one-dimensional mercury telluride polymers have been synthesized and structurally characterized by single crystal X-ray diffraction. Treatment of an ethylenediamine (en) extract of an alloy of nominal composition K2Hg2Te3 with Et4NI gives a 40% yield of (Et4N)2 Hg2Te4 (1). Dark hexagonal plates of (1) crystallize in the monoclinic space group P21/a with a = 14.869(8), b = 12.263(4), c = 15.297.6(6) Å, β = 97.43(4)°, Z = 4 and R(Rw) = 0.057(0.069). The Hg2Te4 2− chains in (1) are built up from five-membered {Hg2Te3} rings with the trigonally planar coordinated Hg atoms in the 1 and 3 positions of the ring. These rings are bonded into strings by Te atoms. Mercury telluride (Me4N)3Hg3Te7·(0.5en) (2) is prepared by the constant current cathodic dissolution of a Hg2Te3 electrode into an en solution of Me4NI. Flat, black needles of (2), crystallize in the triclinic space group P1 with a = 12.080(3), b = 17.261(7), c = 9.905(1) Å, α = 94.22(3)°, β = 92.26(1)°, γ = 80.12(3)°, V = 2028.2(9) Å3, Z = 2 and R(Rw) = 0.041(0.038). Telluride 2 contains five-membered rings similar to those found in 1 with the exception that the five-membered rings are fused at a common tetrahedrally coordinated spiro Hg atom. These Hg3Te6 moieties, with two Hg possessing approximately trigonal-planar coordination and one with tetrahedral coordination are connected into one-dimensional strands via additional single Te atom bridges.

Original languageEnglish (US)
Pages (from-to)2382-2385
Number of pages4
JournalChemistry of Materials
Volume6
Issue number12
DOIs
StatePublished - Dec 1 1994

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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