title: [Pd4(μ3-SbMe3)4(SbMe3)4]: A Pd(0) Tetrahedron with μ3-Bridging Trimethylantimony Ligands.
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.
authors.affiliation: School of Science and Technology, Nottingham Trent University , Nottingham NG11 8NS, United Kingdom.
authors.forename: Sophie L
authors.initials: SL
authors.lastname: Benjamin
authors.affiliation: Institute of Chemical Sciences, Heriot-Watt University , Edinburgh EH14 4AS, United Kingdom.
authors.forename: Tobias
authors.initials: T
authors.lastname: Krämer
authors.affiliation: School of Chemistry, University of Southampton , Southampton SO17 1BJ, United Kingdom.
authors.forename: William
authors.initials: W
authors.lastname: Levason
authors.affiliation: School of Chemistry, University of Southampton , Southampton SO17 1BJ, United Kingdom.
authors.forename: Mark E
authors.initials: ME
authors.lastname: Light
authors.affiliation: Institute of Chemical Sciences, Heriot-Watt University , Edinburgh EH14 4AS, United Kingdom.
authors.forename: Stuart A
authors.initials: SA
authors.lastname: Macgregor
authors.affiliation: School of Chemistry, University of Southampton , Southampton SO17 1BJ, United Kingdom.
authors.forename: Gillian
authors.initials: G
authors.lastname: Reid