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Related Experiment Videos

Tris(2-methylphenyl)phosphonium tetrachloroborate.

J M Burke1, J A Howard, T B Marder

  • 1Department of Chemistry, University of Durham, Durham DH1 3LE, England.

Acta Crystallographica. Section C, Crystal Structure Communications
|November 15, 2000
PubMed
Summary

The study presents the first structural characterization of the [HP(o-tolyl)(3)](+) cation, a novel phosphonium ion. This discovery advances understanding of organophosphorus chemistry and cation structures.

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Area of Science:

  • Organophosphorus Chemistry
  • Inorganic Chemistry
  • Crystallography

Background:

  • Phosphonium ions are versatile intermediates in organic synthesis.
  • Structural characterization of novel phosphonium cations is crucial for understanding their reactivity.
  • The [HP(o-tolyl)(3)](+) cation represents a new class of phosphonium species.

Purpose of the Study:

  • To synthesize and structurally characterize the [HP(o-tolyl)(3)](+) cation.
  • To investigate the coordination environment around the phosphorus atom.
  • To analyze the interaction between the cation and its counter-ion.

Main Methods:

  • Single-crystal X-ray diffraction was employed for structural determination.
  • The synthesis involved reactions to form the target phosphonium salt.

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  • Spectroscopic methods may have been used for preliminary characterization.

    • Main Results:

    • The title compound, C(21)H(22)P(+).BCl(4)(-), was successfully synthesized and characterized.
    • The crystal structure revealed a near-tetrahedral phosphorus atom within the cation.
    • The boron atom in the BCl(4)(-) anion also exhibited a near-tetrahedral geometry.
    • No unusually short cation-anion contacts were observed.

    Conclusions:

    • This work provides the first structural data for the [HP(o-tolyl)(3)](+) cation.
    • The findings contribute to the knowledge of phosphonium ion structures and bonding.
    • The absence of short contacts suggests typical ionic interactions.