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Ancuta Covaci1, Richard A Varga, Cristian Silvestru

  • 1Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, Arany Janos Str. no. 11, RO-400028, Cluj Napoca, Romania.

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|May 18, 2011
PubMed
Summary
This summary is machine-generated.

This study reveals a novel penta-coordinated phosphorus atom in a C(28)H(33)N(2)O(2)P compound, stabilized by intramolecular interactions. The crystal structure shows molecules linked by hydrogen bonds, forming layered arrangements.

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Area of Science:

  • Organophosphorus chemistry
  • Crystal engineering
  • Supramolecular chemistry

Background:

  • Penta-coordinated phosphorus compounds are of interest due to their unique reactivity and structural diversity.
  • Intramolecular interactions play a crucial role in stabilizing unusual coordination geometries.
  • Understanding crystal packing and intermolecular forces is key to designing functional materials.

Purpose of the Study:

  • To characterize the crystal structure of the title compound, C(28)H(33)N(2)O(2)P.
  • To investigate the nature of the penta-coordinated phosphorus atom and its stabilizing interactions.
  • To analyze the intermolecular interactions governing the crystal packing.

Main Methods:

  • Single-crystal X-ray diffraction was used to determine the molecular and crystal structure.
  • Analysis of bond lengths, angles, and non-covalent interactions was performed.
  • Conformational analysis of the morpholine rings was conducted.

Main Results:

  • The title compound features a penta-coordinated phosphorus atom with a dicapped pseudo-tetrahedral geometry, stabilized by weak N→P intramolecular interactions.
  • The morpholine rings adopt an almost ideal chair conformation.
  • In the crystal lattice, molecules are linked into layers via two weak C-H⋯O hydrogen bonds along the a axis.

Conclusions:

  • The study elucidates the structural features of a novel organophosphorus compound with penta-coordinated phosphorus.
  • Intramolecular N→P interactions are critical for achieving the observed coordination geometry.
  • Weak hydrogen bonding dictates the layered supramolecular architecture in the solid state.