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Electrophilic Aromatic Substitution: Sulfonation of Benzene

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Aldehydes are named based on the systematic nomenclature rules set by the IUPAC. For acyclic aldehydes, the longest carbon chain containing the aldehydic (–CHO) group is considered the parent chain. The aldehyde is named by replacing the last letter “e” in the hydrocarbon name with “al”. For instance, a simple, seven-carbon-membered acyclic aldehyde is called heptanal, derived from heptane. The carbon chain is numbered starting from the aldehydic carbon, although the aldehydic carbon’s locant...

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Synthesis of High Purity Nonsymmetric Dialkylphosphinic Acid Extractants

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Published on: October 19, 2017

Benz-yl(meth-yl)phosphinic acid.

Cécile Fougère, Erwann Guénin, Pascal Retailleau

Acta Crystallographica. Section E, Structure Reports Online

|May 19, 2011

Summary

This study details a phosphinic compound (C8H11O2P) where the phosphinic group drives crystal structure cohesion. It forms 2D networks through strong O-H⋯O and weak C-H⋯O hydrogen bonds.

Area of Science:

Crystal chemistry
Solid-state chemistry
Phosphorus chemistry

Background:

Understanding the role of functional groups in crystal engineering is crucial.
Phosphinic compounds exhibit diverse structural properties.
Hydrogen bonding interactions significantly influence molecular assembly.

Purpose of the Study:

To elucidate the crystal structure of the title phosphinic compound (C8H11O2P).
To investigate the role of the phosphinic functional group in directing crystal packing.
To analyze the hydrogen bonding network responsible for the observed two-dimensional structure.

Main Methods:

Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
Analysis of intermolecular interactions, including hydrogen bonds (O-H⋯O and C-H⋯O), was performed.

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Structural data was interpreted to understand the formation of the two-dimensional network.

Main Results:

The title compound, C8H11O2P, crystallizes with a tetra-coordinate, penta-valent phosphorus atom.
The phosphinic group is identified as the primary driver of crystal structure cohesion.
A two-dimensional network is formed parallel to the (001) plane, stabilized by strong O-H⋯O and weak C-H⋯O hydrogen bonds.

Conclusions:

The phosphinic functional group plays a dominant role in the self-assembly of this compound.
The crystal structure is characterized by a robust two-dimensional network formed via a combination of strong and weak hydrogen bonds.
This study provides insights into the structure-property relationships in phosphinic compounds and crystal engineering strategies.