Synthesis and characterization of binuclear biscyclopentadienyl lanthanide acetoximate derivatives; X-ray crystal structure of [Cp2Gd(μ,η2-ONCMe2)]2

Zhongzhi Wu, Da Ming Fan, Zu En Huang, Rui Fang Cai

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Four new organolanthanide acetoximato complexes [Cp2Ln(μ, η2-ONCMe2)]2 [Cp = C5H5; Ln = Pr, Gd, Dy and Yb] have been synthesized by the reaction of Cp3Ln with equimolar acetoxime in THF at room temperature. They have been fully characterized by elemental analysis, IR and MS spectra, indicating that they are oxygen-bridging dimers. The crystal structure of the Gd complex revealed that the N-O fragment of the oximato ligand acts as both a bridging and a side-on donating group in the title complexes. The average Gd-C(Cp) and Gd-N distances are 2.68(2) and 2.42(1) Å, respectively. Two independent Gd-O distances in each oxygen bridge are 2.25(1), 2.29(1) Å and 2.38(1), 2.37(1) Å. The Pr complex is thermally unstable and tends to decompose into a mixture of Cp3Pr and Pr(ONCMe2)3.

Original languageEnglish (US)
Pages (from-to)127-133
Number of pages7
JournalPolyhedron
Volume15
Issue number1
DOIs
StatePublished - Jan 1 1996

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Lanthanoid Series Elements
Rare earth elements
Crystal structure
Oxygen
Derivatives
X rays
crystal structure
oxygen
synthesis
Dimers
x rays
Ligands
dimers
fragments
ligands
room temperature
Chemical analysis
Temperature
acetoxime

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Synthesis and characterization of binuclear biscyclopentadienyl lanthanide acetoximate derivatives; X-ray crystal structure of [Cp2Gd(μ,η2-ONCMe2)]2. / Wu, Zhongzhi; Fan, Da Ming; Huang, Zu En; Cai, Rui Fang.

In: Polyhedron, Vol. 15, No. 1, 01.01.1996, p. 127-133.

Research output: Contribution to journalArticle

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abstract = "Four new organolanthanide acetoximato complexes [Cp2Ln(μ, η2-ONCMe2)]2 [Cp = C5H5; Ln = Pr, Gd, Dy and Yb] have been synthesized by the reaction of Cp3Ln with equimolar acetoxime in THF at room temperature. They have been fully characterized by elemental analysis, IR and MS spectra, indicating that they are oxygen-bridging dimers. The crystal structure of the Gd complex revealed that the N-O fragment of the oximato ligand acts as both a bridging and a side-on donating group in the title complexes. The average Gd-C(Cp) and Gd-N distances are 2.68(2) and 2.42(1) {\AA}, respectively. Two independent Gd-O distances in each oxygen bridge are 2.25(1), 2.29(1) {\AA} and 2.38(1), 2.37(1) {\AA}. The Pr complex is thermally unstable and tends to decompose into a mixture of Cp3Pr and Pr(ONCMe2)3.",
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N2 - Four new organolanthanide acetoximato complexes [Cp2Ln(μ, η2-ONCMe2)]2 [Cp = C5H5; Ln = Pr, Gd, Dy and Yb] have been synthesized by the reaction of Cp3Ln with equimolar acetoxime in THF at room temperature. They have been fully characterized by elemental analysis, IR and MS spectra, indicating that they are oxygen-bridging dimers. The crystal structure of the Gd complex revealed that the N-O fragment of the oximato ligand acts as both a bridging and a side-on donating group in the title complexes. The average Gd-C(Cp) and Gd-N distances are 2.68(2) and 2.42(1) Å, respectively. Two independent Gd-O distances in each oxygen bridge are 2.25(1), 2.29(1) Å and 2.38(1), 2.37(1) Å. The Pr complex is thermally unstable and tends to decompose into a mixture of Cp3Pr and Pr(ONCMe2)3.

AB - Four new organolanthanide acetoximato complexes [Cp2Ln(μ, η2-ONCMe2)]2 [Cp = C5H5; Ln = Pr, Gd, Dy and Yb] have been synthesized by the reaction of Cp3Ln with equimolar acetoxime in THF at room temperature. They have been fully characterized by elemental analysis, IR and MS spectra, indicating that they are oxygen-bridging dimers. The crystal structure of the Gd complex revealed that the N-O fragment of the oximato ligand acts as both a bridging and a side-on donating group in the title complexes. The average Gd-C(Cp) and Gd-N distances are 2.68(2) and 2.42(1) Å, respectively. Two independent Gd-O distances in each oxygen bridge are 2.25(1), 2.29(1) Å and 2.38(1), 2.37(1) Å. The Pr complex is thermally unstable and tends to decompose into a mixture of Cp3Pr and Pr(ONCMe2)3.

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