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Creators/Authors contains: "Riffle, Jared R"

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  1. A new concept of ligand ambiphilicity that relies on the redox behavior of the indirectly coordinated boron cluster scaffold instead of the direct involvement of a single center in a ligand is introduced. 
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    Free, publicly-accessible full text available July 30, 2026
  2. The synthesis and structural characterization of the first sulfur-containing derivatives of C,C-biscarborane {ortho-C2B10}2 cluster – thiol, thioether, and disulfide- is reported. The biscarboranyl dithiol (1-HS-C2B10H10)2 exhibits the exceedingly long intracluster carbon-carbon bond length of 1.858(3) Å, which is attributed to the extensive interaction between lone pairs of thiol groups and the unoccupied molecular orbital of carborane cluster. The structures of doubly deprotonated biscarboranyl dithiolate anion (1-S-C2B10H10)22– with various countercations feature even longer carbon-carbon bond of 2.062(10) Å within the cluster along with the short carbon-sulfur bond of 1.660(7) Å, both indicative of significant delocalization of electron density from sulfur atoms into the cluster. 
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