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Trimethylphosphine oxide dihydrate (Me3PO·2H2O) crystallizes in an orthorhombic structure. The crystal structure reveals hydrogen bonding between water and Me3PO molecules, forming layered networks.

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crystal structurehydratehydrogen bondingphosphine oxide

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Area of Science:

  • Crystal chemistry
  • Supramolecular chemistry

Background:

  • Understanding the hydrogen bonding capabilities of trimethylphosphine oxide (Me3PO) is crucial for its applications.
  • The hydration of Me3PO can significantly alter its physical and chemical properties.

Purpose of the Study:

  • To elucidate the crystal structure of trimethylphosphine oxide dihydrate (Me3PO·2H2O).
  • To investigate the hydrogen bonding interactions within the crystal lattice.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the crystal structure.
  • Analysis of the crystallographic data revealed the space group and molecular arrangement.

Main Results:

  • The title hydrate, Me3PO·2H2O, crystallizes in the orthorhombic space group Pbca.
  • The structure features O-H⋯O hydrogen bonds, with Me3PO acting as acceptors and water molecules as donors and acceptors.
  • Hydrogen-bonded layers propagating in the ac plane were identified.

Conclusions:

  • The crystal structure of Me3PO·2H2O is characterized by extensive hydrogen bonding.
  • These interactions lead to the formation of layered supramolecular assemblies.