title: A motif for infinite metal atom wires.
abstract: A new motif for infinite metal atom wires with tunable compositions and properties is developed based on the connection between metal paddlewheel and square planar complex moieties. Two infinite Pd chain compounds, [Pd4(CO)4(OAc)4Pd(acac)2] 1 and [Pd4(CO)4(TFA)4Pd(acac)2] 2, and an infinite Pd-Pt heterometallic chain compound, [Pd4(CO)4(OAc)4Pt(acac)2] 3, are identified by single-crystal X-ray diffraction analysis. In these new structures, the paddlewheel moiety is a Pd four-membered ring coordinated by bridging carboxylic ligands and μ2 carbonyl ligands. The planar moiety is either Pd(acac)2 or Pt(acac)2 (acac = acetylacetonate). These moieties are connected by metallophilic interactions. The results showed that these one-dimensional metal wire compounds have photoluminescent properties that are tunable by changing ligands and metal ions. 3 can also serve as a single source precursor for making Pd4Pt bimetallic nanostructures with precise control of metal composition.
authors.affiliation: University of Illinois at Urbana-Champaign, Department of Chemical and Biomolecular Engineering, 114 Roger Adams Lab, Boc C-3, MC-712, 600 S. Mathews Avenue, Urbana, IL 61801 (USA).
authors.forename: Xi
authors.initials: X
authors.lastname: Yin
authors.forename: Steven A
authors.initials: SA
authors.lastname: Warren
authors.forename: Yung-Tin
authors.initials: YT
authors.lastname: Pan
authors.forename: Kai-Chieh
authors.initials: KC
authors.lastname: Tsao
authors.forename: Danielle L
authors.initials: DL
authors.lastname: Gray
authors.forename: Jeffery
authors.initials: J
authors.lastname: Bertke
authors.forename: Hong
authors.initials: H
authors.lastname: Yang
keywords: carbonyl ligands; chain structures; heterometallic complexes; nanostructures; palladium