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Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles

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An approach to mixed P(n)A(sm) ligand complexes.

Christoph Schwarzmaier¹, Michael Bodensteiner, Alexey Y Timoshkin

¹Institut für Anorganische Chemie, Universität Regensburg, 93040 Regensburg (Germany).

Angewandte Chemie (International Ed. in English)

|November 15, 2013

Summary

Researchers synthesized the largest mixed phosphorus-arsenic ligand complexes using a P4 butterfly complex and arsenic. These novel compounds show unique structural arrangements confirmed by spectroscopy and DFT calculations.

Keywords:

En ligand complexes arsenic coordination chemistry main-group chemistry phosphorus

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Area of Science:

Organometallic Chemistry
Inorganic Chemistry
Materials Science

Background:

Phosphorus-arsenic ligand complexes are of interest due to their unique electronic and structural properties.
Previous syntheses have been limited in size and complexity.
The development of novel synthetic routes is crucial for exploring new chemical space.

Purpose of the Study:

To synthesize and characterize unprecedentedly large mixed phosphorus-arsenic ligand complexes.
To investigate the structural diversity and bonding in these novel compounds.
To explore the coordination behavior of these complexes with transition metals.

Main Methods:

Reaction of a P4 butterfly complex with yellow arsenic (As4).
Characterization using mass spectrometry, NMR spectroscopy, and X-ray crystallography.
Density Functional Theory (DFT) calculations to support experimental findings.

Main Results:

Successful synthesis of the largest mixed phosphorus-arsenic ligand complexes to date.
Identification of cyclo-E5 and E4 moieties with defined phosphorus and arsenic arrangements.
Experimental and computational data confirm the structures of the synthesized complexes.
Coordination with CuCl induced a rearrangement favoring phosphorus-copper interactions in a 1D polymer.

Conclusions:

The study demonstrates a successful route to large, complex phosphorus-arsenic ligand systems.
The structural flexibility and coordination preferences of these complexes have been elucidated.
These findings open avenues for designing novel materials with tailored properties.