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Pyridinium dihydrogenmonothiophosphate.

B Ziemer1, A Rabis

  • 1Institut für Chemie, Humboldt-Universität zu Berlin, Hessische Strasse 1-2, 10115 Berlin, Germany.

Acta Crystallographica. Section C, Crystal Structure Communications
|July 21, 2004
PubMed
Summary

Crystallization of a novel salt revealed specific hydrogen bonding interactions. These bonds involve the cation

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Area of Science:

  • Organophosphorus chemistry
  • Crystal engineering
  • Supramolecular chemistry

Background:

  • Organophosphorus compounds containing phosphorus-sulfur and phosphorus-oxygen bonds are crucial in various chemical applications.
  • Understanding hydrogen bonding in crystalline salts is key to predicting and controlling their solid-state structures and properties.

Purpose of the Study:

  • To synthesize and characterize a novel salt formed from pyridine dithiomonometaphosphoryl fluoride and ethyldiphenylphosphine.
  • To investigate the hydrogen bonding network and structural features of the isolated crystalline compound.

Main Methods:

  • Synthesis of the title compound via reaction of pyridine dithiomonometaphosphoryl fluoride with ethyldiphenylphosphine in the presence of water.
  • Isolation and crystallization of the resulting salt.
  • Structural analysis of the crystalline compound, including X-ray crystallography.

Main Results:

  • Crystals of the title compound, a novel salt, were successfully isolated.
  • Two distinct hydrogen bonds were identified within the crystal structure.
  • These hydrogen bonds link N-H groups of the cation and O-H groups of the anion to the phosphoryl oxygen atom of the anion, with donor-acceptor distances of 2.654(1) Å and 2.568(1) Å.
  • The observed phosphorus-oxygen (P-O) and phosphorus-sulfur (P-S) bond lengths are 1.514(2) Å and 1.967(1) Å, respectively, indicating a bond order between single and double bonds.

Conclusions:

  • The study successfully synthesized and structurally characterized a new organophosphorus salt.
  • The crystal structure reveals specific hydrogen bonding patterns involving both cation and anion.
  • The bond length analysis suggests partial double bond character in the P-O and P-S bonds.

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