title: Supramolecular assembly of trimeric gold(I) pyrazolates through aurophilic attractions.
abstract: The supramolecular architecture of trinuclear gold(I) pyrazolato aggregates is held together by intermolecular aurophilic attractions, sterically governed by the substituents on the pyrazole rings. A two-dimensional network of [Au(mu-pz)]3 complexes, 1 (pz = pyrazolato anion, C3H3N2-), and a large intricate aggregate of 16 [Au(mu-4-Me-pz)]3 complexes in 2 have been determined crystallographically. Under UV irradiation at ambient temperature, solid samples of 1 and 2 luminesce with lambda max = 626 and 631 cm-1, respectively, attributed to intermolecular Au...Au aurophilic contacts.
authors.affiliation: Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, P.O. Box 23346, San Juan, Puerto Rico 00931.
authors.forename: Guang
authors.initials: G
authors.lastname: Yang
authors.forename: Raphael G
authors.initials: RG
authors.lastname: Raptis