Abstract
Homoleptic, dicationic nickel(II) complexes with two cis-chelating N-heterocyclic carbene ligands have been prepared via high yielding, air-stable procedures. Homoleptic and heteroleptic dicationic tetra(carbene) palladium(II) analogues are accessible by the reaction of [ cis-CH 2{ N(H)CC(H)N(Me)C } 2Pd(OAc) 2] with one diazolium diiodide salt precursor or by reacting [ cis-CH 2{ N(H)CC(H)N(Me)C } 2PdI 2] with two equivalents of NaOAc and the corresponding diazolium diiodide salts. 1H- and 13C-NMR as well as X-ray crystallographic data are discussed.
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