Heterometallic Lanthanide-Group 14 Metal Chalcogenolates

Jongseong Lee, T. J. Emge, J. G. Brennan

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Abstract

Heterometallic chalcogenolate compounds containing both lanthanide (Ln) and group 14 metals (M; M = Sn, Pb) form a variety of structures that can be understood in the context of relative metal - chalcogen bond strengths. The compounds (THF)2Eu(μ2-SePh)6Pb2 (1), [Yb(THF)6][Sn(SePh)3]2 (2), and [(py)2Eu(2-S-NC5H4)2Sn(2-S-NC 5H4)2]n (3) have been prepared, and their structures have been established by low-temperature single-crystal X-ray diffraction. Ln-S bonds are found to be relatively insensitive to the presence of a group 14 metal thiolate, whereas Ln-Se bonds are readily distorted upon coordination to Pb(SePh)2, and cleaved by the addition of the stronger Lewis acid Sn(SePh)2. The stereochemically active lone pair of electrons on the group 14 metal influences structure, as does the identity of the chalcogenolate. All three compounds show no interaction between the Ln ion and the group 14 metal lone pair. Crystal data (1-3 Mo Kα; -80 to -100°C): 1, triclinic space group Pl̄, a = 10.582(3) Å, b = 12.114(2) Å, c = 18.946(6) Å, α = 89.57(2)°, β= 86.11(4)°, γ = 75.87(2)̊, V= 2350(1)Å3, Z = 2; 2, monoclinic space group P21/c, a = 12.961(2) Å, b = 22.768(4) Å, c = 22.560(4) Å, β = 95.04(2)̊, V = 6632(2) Å3, Z = 4; 3, monoclinic space group Cc, a = 20.737(6) Å, b = 9.801(3) Å, c = 18.849(5) Å, β = 125.34(2)̊, V = 3125(2) Å3, Z = 4.

Original languageEnglish (US)
Pages (from-to)5064-5068
Number of pages5
JournalInorganic Chemistry
Volume36
Issue number22
DOIs
StatePublished - 1997

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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