New Mixed Metal Cluster Complexes Containing Platinum. The Synthesis and Structural Characterizations of PtFe4(CO)12(COD)(μ5-C) and PtFe4(CO)12(PMe2Ph)25-C)

Richard D. Adams, Burjor Captain, Wei Fu

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The new mixed metal carbide containing cluster compounds PtFe4(CO)12 (COD)(μ5-C) 1 and PtFe4(CO)12(PMe2Ph)25-C), 2 were obtained by metal-metal exchange reactions between [Et4N]2[Fe5(C)(CO)14] with Pt(COD)Cl2 in the presence Of TIPF6 and Pt(PMe2Ph)2Cl2, respectively. Compound 1 was also obtained by the reaction of Fe5(CO)155-C) with Pt(COD)2 in the presence of UV irradiation but in a lower yield. Both compounds were characterized by a combination of IR, 1H NMR and single crystal x-ray diffraction analyses. Both complexes consists of a square pyramidal cluster of five metal atoms with an "interstitial" carbido ligand in the center of the square base. The phosphine ligands in 2 undergo a dynamical intramolecular interchange at a rate that is fast on the 1H NMR time scale at 45°C, ΔG† (at 318 K) = 15.1 kcal/mol.

Original languageEnglish
Pages (from-to)303-312
Number of pages10
JournalJournal of Cluster Science
Volume12
Issue number1
DOIs
StatePublished - Dec 1 2001
Externally publishedYes

Fingerprint

crack opening displacement
Coordination Complexes
metal clusters
Platinum
platinum
Metals
phosphine
synthesis
metals
Ligands
Nuclear magnetic resonance
nuclear magnetic resonance
ligands
Interchanges
phosphines
carbides
Carbides
interstitials
x ray diffraction
Diffraction

Keywords

  • Carbido ligand
  • Fluxionality
  • Iron
  • Platinum

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

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abstract = "The new mixed metal carbide containing cluster compounds PtFe4(CO)12 (COD)(μ5-C) 1 and PtFe4(CO)12(PMe2Ph)2(μ 5-C), 2 were obtained by metal-metal exchange reactions between [Et4N]2[Fe5(C)(CO)14] with Pt(COD)Cl2 in the presence Of TIPF6 and Pt(PMe2Ph)2Cl2, respectively. Compound 1 was also obtained by the reaction of Fe5(CO)15(μ5-C) with Pt(COD)2 in the presence of UV irradiation but in a lower yield. Both compounds were characterized by a combination of IR, 1H NMR and single crystal x-ray diffraction analyses. Both complexes consists of a square pyramidal cluster of five metal atoms with an {"}interstitial{"} carbido ligand in the center of the square base. The phosphine ligands in 2 undergo a dynamical intramolecular interchange at a rate that is fast on the 1H NMR time scale at 45°C, ΔG† (at 318 K) = 15.1 kcal/mol.",
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AU - Captain, Burjor

AU - Fu, Wei

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N2 - The new mixed metal carbide containing cluster compounds PtFe4(CO)12 (COD)(μ5-C) 1 and PtFe4(CO)12(PMe2Ph)2(μ 5-C), 2 were obtained by metal-metal exchange reactions between [Et4N]2[Fe5(C)(CO)14] with Pt(COD)Cl2 in the presence Of TIPF6 and Pt(PMe2Ph)2Cl2, respectively. Compound 1 was also obtained by the reaction of Fe5(CO)15(μ5-C) with Pt(COD)2 in the presence of UV irradiation but in a lower yield. Both compounds were characterized by a combination of IR, 1H NMR and single crystal x-ray diffraction analyses. Both complexes consists of a square pyramidal cluster of five metal atoms with an "interstitial" carbido ligand in the center of the square base. The phosphine ligands in 2 undergo a dynamical intramolecular interchange at a rate that is fast on the 1H NMR time scale at 45°C, ΔG† (at 318 K) = 15.1 kcal/mol.

AB - The new mixed metal carbide containing cluster compounds PtFe4(CO)12 (COD)(μ5-C) 1 and PtFe4(CO)12(PMe2Ph)2(μ 5-C), 2 were obtained by metal-metal exchange reactions between [Et4N]2[Fe5(C)(CO)14] with Pt(COD)Cl2 in the presence Of TIPF6 and Pt(PMe2Ph)2Cl2, respectively. Compound 1 was also obtained by the reaction of Fe5(CO)15(μ5-C) with Pt(COD)2 in the presence of UV irradiation but in a lower yield. Both compounds were characterized by a combination of IR, 1H NMR and single crystal x-ray diffraction analyses. Both complexes consists of a square pyramidal cluster of five metal atoms with an "interstitial" carbido ligand in the center of the square base. The phosphine ligands in 2 undergo a dynamical intramolecular interchange at a rate that is fast on the 1H NMR time scale at 45°C, ΔG† (at 318 K) = 15.1 kcal/mol.

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