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Scandium-Terminal Boronylphosphinidene Complex.

Bin Feng1, Li Xiang1, Ambre Carpentier2

  • 1State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China.

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|February 11, 2021
PubMed
Summary
This summary is machine-generated.

Researchers synthesized the first rare-earth terminal phosphinidene complex, a scandium boronylphosphinidene. This complex exhibits a strong Sc-P π interaction and acts as a nucleophilic phosphinidene.

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Area of Science:

  • Organometallic Chemistry
  • Main Group Chemistry

Background:

  • Rare-earth metal-terminal imido complexes were reported in 2010.
  • Rare-earth metal-terminal phosphinidene complexes have not yet been synthesized.

Purpose of the Study:

  • To report the synthesis and structural characterization of the first rare-earth-terminal phosphinidene complex.
  • To investigate the electronic structure and bonding properties of the new complex.

Main Methods:

  • Synthesis of scandium boronylphosphinidene complex.
  • Single-crystal X-ray diffraction for structural analysis.
  • Density Functional Theory (DFT) calculations for electronic structure analysis.

Main Results:

  • The first rare-earth-terminal phosphinidene complex, a scandium boronylphosphinidene, was successfully synthesized and characterized.
  • The scandium-phosphorus (Sc-P) bond length is significantly shorter (2.381(1) Å) compared to a related phosphido complex (2.564(1) Å).
  • DFT calculations revealed a strong Sc-P π interaction, contrasting with the weak interaction in the phosphido complex.
  • Preliminary reactivity studies showed the complex functions as a nucleophilic phosphinidene.

Conclusions:

  • This work establishes the first rare-earth-terminal phosphinidene complex.
  • The strong Sc-P π interaction is key to the complex's stability and reactivity.
  • The complex exhibits nucleophilic phosphinidene behavior, opening avenues for new chemical transformations.