Pushmi-pullyu with palladium: Although created by σ donation from SnCl2 to a PdII complex, the SnPd bonds in the compounds depicted exhibit formal σ donation in the opposite direction. Computational and spectroscopic data support stannylpalladium (PdISnIII) and palladastanna(IV)ocane (Pd0→SnIV) descriptions over stannylene coordination.
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