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Tribenzylphosphine oxide.

H Novoa De Armas1, H Pérez, O M Peeters

  • 1Laboratorium voor Analytische Chemie en Medicinale Fysicochemie, Faculteit Farmaceutische Wetenschappen, Katholieke Universiteit Leuven, Van Evenstraat 4, B-3000 Leuven, Belgium.

Acta Crystallographica. Section C, Crystal Structure Communications
|July 21, 2004
PubMed
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This study details the structure of triphenylphosphine oxide, an organic compound. Its molecular geometry and dimensions were characterized, revealing threefold symmetry.

Area of Science:

  • Inorganic Chemistry
  • Crystallography
  • Organic Chemistry

Background:

  • Tertiary phosphine oxides are important ligands in coordination chemistry.
  • Dibenzylphosphine is a precursor for synthesizing phosphine ligands.
  • Nickel(II) complexes are widely studied for their catalytic and magnetic properties.

Purpose of the Study:

  • To characterize the crystal structure of triphenylphosphine oxide.
  • To determine the molecular geometry and key bond dimensions.
  • To report the accidental discovery of the compound during complex synthesis.

Main Methods:

  • Single-crystal X-ray diffraction was used for structural determination.
  • The crystal structure was solved and refined.
  • Molecular dimensions (bond lengths and angles) were precisely measured.

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Main Results:

  • The compound (C(6)H(5)CH(2))(3)PO, triphenylphosphine oxide, was identified.
  • The molecule exhibits threefold symmetry with the P-O bond aligned along this axis.
  • Key dimensions were determined: P-O bond length of 1.488(4) Å, P-C bond length of 1.823(3) Å, and O-P-C angle of 114.7(1)°.

Conclusions:

  • The crystal structure of triphenylphosphine oxide has been elucidated.
  • The compound possesses a symmetrical molecular structure.
  • The findings provide valuable data for understanding phosphine oxide chemistry and reactivity.