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Assembly of Gold Nanorods into Chiral Plasmonic Metamolecules Using DNA Origami Templates

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Axially chiral allenyl gold complexes.

Alice Johnson¹, Antonio Laguna, M Concepción Gimeno

¹Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza , 50009 Zaragoza, Spain.

Journal of the American Chemical Society

|August 29, 2014

Summary

This summary is machine-generated.

Novel allenyl gold complexes were synthesized from triphenylpropargylphosphonium bromide. The study reveals two distinct coordination modes of the allene isomer to gold, influenced by the gold

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Area of Science:

Organometallic Chemistry
Gold Complexes
Phosphonium Salts

Background:

Triphenylpropargylphosphonium bromide serves as a precursor for novel organometallic compounds.
Understanding the coordination chemistry of allene isomers with transition metals is crucial for developing new catalytic systems.

Purpose of the Study:

To synthesize unprecedented allenyl gold complexes.
To investigate the coordination modes of allenyl gold complexes based on gold oxidation state.
To structurally characterize the synthesized complexes.

Main Methods:

Synthesis of allenyl gold complexes starting from triphenylpropargylphosphonium bromide.
X-ray diffraction for structural characterization of the synthesized complexes.
Exploration of different gold precursors (gold(I) and gold(III)) to study coordination variations.

Main Results:

Successful synthesis of bromo-, pentafluorophenyl-, and triphenylphosphine-gold(I) allenyl complexes with alpha-carbon coordination.
Preparation of a chiral pentafluorophenyl-gold(III) allenyl complex featuring gamma-carbon coordination.
X-ray diffraction confirmed the characteristic C═C═C unit distances in all synthesized complexes.

Conclusions:

Established a novel synthetic route to allenyl gold complexes.
Demonstrated that the coordination mode of the allene isomer is dependent on the gold oxidation state.
Provided detailed structural insights into these unique organogold compounds.