Chalcogenide Substitution Reactions

Jonathan M. McConnachie, John C. Bollinger, James A. Ibers*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

The feasibility of preparing tellurometalates from selenometalates has been demonstrated by the preparation of the compounds [PPh4]4[Ni4Te4(Te2)2(Te3)4] and [PPh4]4[Pt4Te4(Te3)6] from the reactions in DMF of TePEt3 with [PPh4]2[Ni(Se4)2] and [PPh4]2[Pt(Se4)3], respectively. The NEt4+ salt of the [Pt4Te4(Te3)6]4− ion could also be isolated from the reaction of Pt(xan)2 with Li2Te and Te in DMF. The anion [Ni4Te4(Te2)2(Te3)4]4− has a Ni4Te4 cubane core, with pairs of Te22− chains bridging NiIV atoms on opposite faces of the core and four Te32−chains bridging the NiIV atoms on the remaining cubane faces. The anion [Pt4Te4(Te3)6]4−possesses a Pt4Te4 cubane core and has six Te32− chains bridging PtIV atoms on the cubane faces. In the cubane anions each metal atom is in a distorted octahedral environment, being coordinated by three Te atoms in the cubane framework and by three Te atoms in chains that bridge to the other three metal atoms. Unit cell data (−163 °C): [PPh4]4[Ni4Te4(Te2)2(Te3)4], space group [formula omitted], a = 18.925(3) Å, c = 17.155(3) Å, V= 6144(2) Å3, Z = 2; [PPh4]4[Pt4Te4(Te3)6], space group [formula omitted], a = 27.024(3) Å, α = 59.91(2)°, V= 13954(3) Å3, Z = 4; [NEt4]4[Pt4Te4(Te3)6]·2DMF, space group [formula omitted], a = 15.685(3) Å, b = 40.103(8) Å, c = 15.330(3) Å, β = 119.10(3)°, V= 8426(3) Å3, Z = 4.

Original languageEnglish (US)
Pages (from-to)3923-3927
Number of pages5
JournalInorganic chemistry
Volume32
Issue number18
DOIs
StatePublished - Jan 1 1993

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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