Discovery and Supramolecular Interactions of Neutral Palladium-Oxo Clusters Pd 16 and Pd 24

We report on the synthesis, structure, and physicochemical characterization of the first three examples of neutral palladium-oxo clusters (POCs). The 16-palladium(II)-oxo cluster [Pd O (OH) ((CH ) As) ] (Pd ) comprises a cyclic palladium-oxo unit capped by eight dimethylarsinate groups. The chloro-d...

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Published inAngewandte Chemie International Edition Vol. 60; no. 7; pp. 3632 - 3639
Main Authors Bhattacharya, Saurav, Basu, Uttara, Haouas, Mohamed, Su, Pei, Espenship, Michael Forrester, Wang, Fei, Solé-Daura, Albert, Taffa, Dereje H, Wark, Michael, Poblet, Josep M, Laskin, Julia, Cadot, Emmanuel, Kortz, Ulrich
Format Journal Article
LanguageEnglish
Published Germany Wiley-VCH Verlag 15.02.2021
Subjects
Chemical Sciences
inorganic chemistry
polyoxopalladium
organic-inorganic frameworks
neutral clusters
supramolecular chemistry
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Summary:We report on the synthesis, structure, and physicochemical characterization of the first three examples of neutral palladium-oxo clusters (POCs). The 16-palladium(II)-oxo cluster [Pd O (OH) ((CH ) As) ] (Pd ) comprises a cyclic palladium-oxo unit capped by eight dimethylarsinate groups. The chloro-derivative [Pd Na O (OH)  Cl  ((CH )  As) ] (Pd Cl) was also prepared, which forms a highly stable 3D supramolecular lattice via strong intermolecular interactions. The 24-palladium(II)-oxo cluster [Pd O (OH) ((CH ) As) ] (Pd ) can be considered as a bicapped derivative of Pd with a tetra-palladium-oxo unit grafted on either side. The three compounds were fully characterized 1) in the solid state by single-crystal and powder XRD, IR, TGA, and solid-state H and C NMR spectroscopy, 2) in solution by H, C NMR and H DOSY spectroscopic methods, and 3) in the gas phase by electrospray ionization mass spectrometry (ESI-MS).
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202010690