[Pd4(μ3-SbMe3)4(SbMe3)4]: A Pd(0) Tetrahedron with μ3-Bridging Trimethylantimony Ligands

Sophie L. Benjamin, Tobias Krämer, William Levason, Mark E. Light, Stuart Alan Macgregor, Gillian Reid

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Abstract

The palladium(II) chlorostibine complex [PdCl2(SbMe2Cl)2]2 has a dimeric structure in the solid state, stabilized by hyper-coordination at the Lewis amphoteric Sb centers. Reaction with 8 equiv of MeLi forms [Pd4(μ3-SbMe3)4(SbMe3)4], whose structure comprises a tetrahedral Pd(0) core with four terminal SbMe3 ligands and four μ3-SbMe3 ligands, one capping each triangular Pd3 face. Density functional theory calculations, supported by energy decomposition analysis and the natural orbitals for chemical valence scheme, highlight significant donor and acceptor orbital contributions to the bonding between both the terminal and the bridging SbMe3 ligands and the Pd4 core.
Original languageEnglish
Pages (from-to)6964–6967
Number of pages4
JournalJournal of the American Chemical Society
Volume138
Issue number22
Early online date20 May 2016
DOIs
Publication statusPublished - 8 Jun 2016

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