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Chemistry of Dimetallaoctaborane(12) with Chalcogen-Based Borate Ligands: Obedient versus Disobedient Clusters

Abstract : The reactions of dimetallaoctaboranes(12) [(Cp*M)BH] [M = Co () or Rh (); Cp* = η-CMe] with different chalcogen sources, such as Li[BHE] and Li[BHEPh] (E = S, Se, or Te), led to two unique reaction outcomes. For example, the formation of 10-vertex -[(Cp*M)BEH] (, M = Co, E = S; , M = Co, E = Se; , M = Co, E = Te; , M = Rh, E = Se) from compounds and is a typical representation of a cluster growth reaction, while the formation of -[(Cp*Co)BH(EPh)] [E = S (), Se (), or Te ()] is a rare method that yielded clusters, keeping the core geometry identical. The formation of -- is a unique method that converts disobedient cluster to obedient clusters -. Further, the reactivity of - with various metal carbonyls presented sequential cluster growth reactions, which afforded 11-vertex -[(Cp*Co)BSeH{Fe(CO)}] () and 13-vertex fused -[(Cp*Co)BSeH{Ru(CO)}] (). The core geometry of - is uncommon and very similar to that of [CBH] with a unique open pentahapto-coordinating five-membered face.
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Submitted on : Tuesday, May 12, 2020 - 3:45:06 PM
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Chandan Nandi, Sourav Kar, Mohammad Zafar, Ketaki Kar, Thierry Roisnel, et al.. Chemistry of Dimetallaoctaborane(12) with Chalcogen-Based Borate Ligands: Obedient versus Disobedient Clusters. Inorganic Chemistry, American Chemical Society, 2020, 59 (6), pp.3537-3541. ⟨10.1021/acs.inorgchem.0c00122⟩. ⟨hal-02533162⟩

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