title: Neutral Cu4N12 and Ag4N12 metallacycles with a para-cyclophane framework assembled from copper(I) and silver(I) pyrazolates and pyridazine.
abstract: Trinuclear copper(I) and silver(I) pyrazolates {[3,5-(CF3)2Pz]M}3 (M = Cu and Ag) react with pyridazine to give neutral, tetranuclear metallacycles with a para-cyclophane core whereas benzo[c]cinnoline fails to break the cyclic pyrazolate trimers under similar conditions, and affords a metalla-propellane featuring both two- and three-coordinate metal sites.
authors.affiliation: Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019-0065, USA. dias@uta.edu
authors.forename: H V Rasika
authors.initials: HV
authors.lastname: Dias
authors.forename: Himashinie V K
authors.initials: HV
authors.lastname: Diyabalanage
authors.forename: Chammi S Palehepitiya
authors.initials: CS
authors.lastname: Gamage