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Showing 1–7 of 7 results
Advanced filters: Author: Cristian Celis-Barros Clear advanced filters

  • Although the trivalent actinides are similar to the lanthanide series in terms of chemistry and bonding, their structures and properties can diverge significantly. Here, the authors report a series of complexes of the trivalent actinides Np(III) through Cf(III) along with their lanthanide counterparts using a polarizable non-innocent, sulfur-donor ligand.

    • Nicholas B. Beck
    • Cristian Celis-Barros
    • Thomas E. Albrecht
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-11

  • Promethium remains the least studied element among the lanthanide series because of its scarcity and radiolytic nature. Here, the authors report two new isostructural 2,2’:6’,2”-terpyridine compounds of 147Pm and 248Cm.

    • Trenton B. Vogt
    • Megan E. Simms
    • Frankie D. White
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-6

  • Despite the distinct electronic properties of the wide variety Cm3+ compounds that have been prepared to date, no singlecrystal structural characterization of a complex containing a Cm−C bond has been reported. Here the authors report the synthesis of a Cm complex bearing trimethylsilylcyclopentadienyl and 4,4’-bipyridine ligands with a low energy emission and identify the 4,4’-bipyridine ligand as the primary quenching agent.

    • Brian N. Long
    • María J. Beltrán-Leíva
    • Thomas E. Albrecht-Schönzart
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-9

  • Studying how the ligand design influences the bonding of f-block complexes is crucial to control their properties. Here, the authors report the preparation of Bk(III) and Ce(III) complexes featuring a terpyridyl ligand; structural, spectroscopic, electrochemical, and theoretical analysis reveal that the ligand induces unusual bonding by creating a plane of enhanced bond covalency.

    • Alyssa N. Gaiser
    • Cristian Celis-Barros
    • Thomas E. Albrecht-Schönzart
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-9

  • Californium is difficult to prepare in its divalent state. Now, crystals of a Cf(II) crown–ether complex have been synthesized by reduction of a Cf(III) precursor with an Al/Hg amalgam. They exhibit 5f→6d transitions in the visible region and near-infrared emission that are highly sensitive to changes in the coordination environment.

    • Todd N. Poe
    • Harry Ramanantoanina
    • Cristian Celis-Barros
    Research
    Nature Chemistry
    Volume: 15, P: 722-728

  • The coordination environment has a great impact on the electronic structure, bonding and properties of metal complexes. Here the authors report a dinuclear organometallic americium complex that displays unexpectedly ionic Am−N bonding, but enhanced covalency in the Am−C bonds compared to its neodymium analogue.

    • Brian N. Long
    • María J. Beltrán-Leiva
    • Thomas E. Albrecht-Schönzart
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-7

  • Enhanced covalency is achieved for a curium complex with curium–sulfur bonds by subjecting the compound to high pressures, indicating that pressure can be used to tune covalency in actinide compounds.

    • Joseph M. Sperling
    • Evan J. Warzecha
    • Thomas E. Albrecht-Schönzart
    Research
    Nature
    Volume: 583, P: 396-399