Synthesis and Characterization of the Strontium Thiolate Sr(SMes*)2(THF)4•2THF (Mes* = 2,4,6-tBu3C6H2) and Selenolate Sr(SeMes*)2(THF)4•2THF. Structural Investigation of SrI2(THF)5

Karin Ruhlandt-Senge, Kelly Davis, Sona Dalai, Ulrich Englich, Mathias O. Senge

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47 Scopus citations

Abstract

The syntheses and structural characterization of the strontium thiolate Sr(SMes*)2(THF)4•2THF, 1 (Mes* = 2,4,6-tBu3C6H2), and selenolate Sr(SeMes*)2(THF)4•2THF, 2, are described. We also report the synthesis and structural characterization of SrI2(THF)5,3, the apparent starting material for the synthesis of 1 and 2. 3 exhibits pentagonal bipyramidal geometry at the strontium atom. 3 can be prepared by dissolving SrI2 in THF, while the treatment of 3 with 2 equiv of the sterically demanding potassium thiolate and selenolate in THF affords 1 and 2 in good yields. 1 and 2 exhibit distorted octahedral environments at the metal center, with the degree of distortion much more significant for the thiolato derivative. 1 and 2 were characterized by 1H NMR and IR spectroscopy, elemental analysis, and X-ray crystallography; 3 was characterized by single-crystal structure analysis. Crystal data with Mo Kα (λ = 0.710 73 (Å) at 213 K are as follows. 1: a = 18.535(4) Å, b = 19.222(4) Å, c = 18.775(4) Å, β = 107.30(3)°, V = 6387(2) Å3, Z = 4, monoclinic, space group I2la, 2254 (I > 3σ(I)) data, R = 0.071. 2: a = 18.330(4) Å, b = 19.498(4) Å, c = 18.608(4) Å, β = 105.52(3)°, V = 6408(3) Å3, Z = 4, monoclinic, space group I2la, 2331 (I > 3σ(I)) data, R = 0.057. 3: a = 8.851(1) Å, c = 35.353(7) Å, V = 2770(1) Å3, Z = 4, tetragonal, space group P43212 939 (I > 3σ(I)) data, R = 0.069.

Original languageEnglish (US)
Pages (from-to)2587-2592
Number of pages6
JournalInorganic Chemistry
Volume34
Issue number10
DOIs
StatePublished - May 1 1995

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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