Discovery of a Neutral 40-Pd^II-Oxo Molecular Disk, [Pd₄₀O₂₄(OH)₁₆{(CH₃)₂AsO₂}₁₆]: Synthesis, Structural Characterization, and Catalytic Studies

Abstract

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Discovery of Polythioplatinate(II) [Pt3S2(SO3)6]10– and Study of Its Solution and Catalytic Properties

“…The catalytic activity of 1 supported on modified SBA-15 ( 1-apts-SBA15 ) was investigated for the hydrogenation of o -xylene yielding cis -1,2-dimethylcyclohexane and trans -1,2-dimethylcyclohexane using a PID-Effi fixed-bed reactor, where SBA-15 is a highly robust mesoporous silica having uniform hexagonal pores with tunable pore sizes . The detailed procedures for the preparation of the supported precatalyst 1-apts-SBA15 and the catalyst bed are described in the Supporting Information.…”

PtIV-Containing Hexaplatinate(II) [PtIVPtII6O6(AsO2(CH3)2)6]2– and Hexapalladate(II) [PtIVPdII6O6(AsO2(CH3)2)6]2–

“…The first polyoxopalladate­(II) (POPd), [H 6 Pd II 13 O 8 (AsO 4 ) 8 ] 8– , and the first polyoxoaurate­(III) (POAu), [Au III 4 O 4 (AsO 4 ) 4 ] 8– , were discovered by Kortz and co-workers in 2008 and 2010, respectively, which eventually led to the discovery of a large family of POPds with different shapes, sizes, and compositions . Recently, the first neutral palladium­(II)-oxo clusters (POCs) were reported by Kortz and co-workers, such as the disk-shaped [Pd 16 O 8 (OH) 8 ((CH 3 ) 2 AsO 2 ) 8 ] (Pd 16 ) and its chloro-derivative [Pd 16 O 8 (OH) 5 Cl 3 ((CH 3 ) 2 AsO 2 ) 8 ] (Pd 16 Cl), the larger, bicapped derivative [Pd 24 O 12 (OH) 8 ((CH 3 ) 2 AsO 2 ) 16 ] (Pd 24 ), and the even larger [Pd 40 O 24 (OH) 16 ((CH 3 ) 2 AsO 2 ) 16 ] (Pd 40 ) . Even more recently, Kortz and co-workers discovered the first two examples of cationic POCs containing f -metal ions, [Pd II 6 O 12 M 8 {(CH 3 ) 2 AsO 2 } 16 (H 2 O) 8 ] 4+ (M = Ce IV , Th IV ) .…”

Coordination of Pt(IV) by {P8W48} Macrocyclic Inorganic Cavitand: Structural, Solution, and Electrochemical Studies

“…This field is currently dominated by platinum − and ruthenium − containing complexes. The polyoxopalladates, discovered and developed by the Kortz group, are also in focus. − Recently, Na 5 [H 3 Pt IV W 6 O 24 ] and Na 3 K 5 [Pt 2 II (W 5 O 18 ) 2 ] were reported to have high hydrogen evolution reaction (HER) performance, and in situ XAS experiments and DFT calculations suggest the Pt–O bond to be the active site . The Pt–O junction facilitates electron–proton coupling and leads to the rapid release of H 2 .…”