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Synthesis of High Purity Nonsymmetric Dialkylphosphinic Acid Extractants
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Methyl-phospho-nic acid, CH3PO(OH)2.

Hans Reuter1, Martin Reichelt1

  • 1Institute of Chemistry of New Materials, University of Osnabrück, Barbarastrasse 7, 49069 Osnabrück, Germany.

Acta Crystallographica. Section E, Structure Reports Online
|April 26, 2014
PubMed
Summary

This study reveals the crystal structure of CH5O3P, detailing how its molecules form hydrogen bonds. These interactions lead to the self-assembly of distinct molecular bilayers stacked within the crystal lattice.

Area of Science:

  • Crystallography
  • Solid-state chemistry
  • Molecular interactions

Background:

  • Understanding the crystal packing and intermolecular forces is crucial for predicting material properties.
  • The compound CH5O3P presents an interesting case for studying hydrogen bonding networks.

Purpose of the Study:

  • To elucidate the crystal structure of CH5O3P.
  • To analyze the hydrogen bonding patterns and their role in crystal assembly.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
  • Analysis of bond lengths, angles, and hydrogen bond geometry.

Main Results:

  • The asymmetric unit contains two independent, similar molecules.

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  • Each molecule acts as both a hydrogen bond donor (P-OH) and acceptor (P=O).
  • Two distinct bilayers, formed by each independent molecule, are observed, stacked perpendicular to the a axis.

    • Conclusions:

    • The hydrogen bonding network dictates the formation of bilayer structures in the crystal.
    • The observed packing arrangement provides insights into the supramolecular chemistry of CH5O3P.