Coinage Metal Pyrazolates [(3,5-(CF3)2Pz)M]3 (M = Au, Ag, Cu) as Buckycatchers

Naleen B Jayaratna; Marilyn M Olmstead; Boris I Kharisov; H V Rasika Dias

doi:10.1021/acs.inorgchem.6b01709

Coinage Metal Pyrazolates [(3,5-(CF3)2Pz)M]3 (M = Au, Ag, Cu) as Buckycatchers

Inorg Chem. 2016 Sep 6;55(17):8277-80. doi: 10.1021/acs.inorgchem.6b01709. Epub 2016 Aug 11.

Authors

Naleen B Jayaratna¹, Marilyn M Olmstead², Boris I Kharisov³, H V Rasika Dias¹

Affiliations

¹ Department of Chemistry and Biochemistry, The University of Texas at Arlington , Arlington, Texas 76019-0065, United States.
² Department of Chemistry, University of California , One Shields Avenue, Davis, California 95616-5259, United States.
³ Universidad Autónoma de Nuevo León, Ciudad Universitaria , San Nicolás de los Garza, Nuevo León 66451, Mexico.

PMID: 27513694
DOI: 10.1021/acs.inorgchem.6b01709

Abstract

The synthesis and characterization of supramolecular assemblies {C60[M3]4}∞ consisting of C60 and coinage metal pyrazolates [M3] (i.e., [(3,5-(CF3)2Pz)M]3, where Pz = pyrazolate and M = Au, Ag, and Cu) are reported. {C60[Cu3]4}∞, {C60[Ag3]4}∞ and {C60[Au3]4}∞ form isomorphous crystals. The [M3] moieties adopt a concave conformation to complement the convex C60 surface. They exist as dimers of trimers (i.e., hexanuclear [M3]2 units) that are held together by three close M···M metallophilic interactions at 3.1580(17), 3.2046(7), and 3.2631(7) Å for copper, silver, and gold systems, respectively. The [M3]2 moieties surround each C60 in a tetrahedral fashion, while each [M3]2 is sandwiched by two C60 molecules to form a supramolecular 3D assembly.