Solvothermal synthesis, molecular structures and spectroscopic characterization of the cluster compounds (Ph4P) 2[Fe4Te2(CO)14] and Cs[HFe3Te(CO)9]

Birinchi K. Das, Mercouri G. Kanatzidis

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Abstract

The iron carbonyl tellurido cluster (Ph4P)2[Fe4Te2(CO)14] (1) has been synthesized at 80°C in moderate yield by heating a mixture of Fe3(CO)12, Na2Te2, and Ph4PBr in a 2:1:6 molar ratio in a sealed Pyrex tube containing 0.4 ml of methanol. Another cluster, Cs[HFe3Te(CO)9] (2) has been prepared similarly by allowing Fe3(CO)12 to react with Cs2Te3 (4: 1 molar ratio) in 0.2 ml of H2O at 130°C. Compound 1 crystallizes in the monoclinic space group C2/c (No. 15) with a = 23.324(3) Å, b = 11.793(2) Å, c = 23.499(5) Å, β = 102.02(1)°, V = 6322(2) Å3, Z = 4. A central 'Fe23-Te)2(CO)6' butterfly unit remains connected to two Fe(CO)4 fragments through the tellurium atoms in the anion of 1. Compound 2 crystallizes in the orthorhombic space group Pbca (No. 61) with a = 9.672(2) Å, b = 15.816(4) Å, c = 21.430(5) Å, V = 3278(2) Å3, Z = 8. In the anion of this compound, a Te2- ligand caps a triiron triangle to form an approximate tetrahedron, with a hydride ligand bridging one of the Fe-Fe bonds. Both compounds have been characterized by solid state and solution infrared spectroscopy and 125Te NMR spectroscopy.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalJournal of Organometallic Chemistry
Volume513
Issue number1-2
DOIs
Publication statusPublished - May 3 1996

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Keywords

  • Chalcogenides
  • Hydrothermal synthesis
  • Iron
  • Metal carbonyls
  • Metal clusters
  • Tellurium

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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