Synthesis of Metal Nanoparticles Stabilized by Metal−Carbon Bonds

A new method for the preparation of metal nanoparticles in organic media is proposed. This is based on the formation of metal−carbon bonds after reduction of the corresponding diazonium derivative of the capping ligand. The particles are very stable due to the strong metal−ligand covalent bond, and the proposed method appears to be an alternative for the preparation of monolayer-protected metal nanoparticles when the formation of metal−sulfur or metal−nitrogen bonds needs to be avoided.