Homoleptic chelating N-heterocyclic carbene complexes of palladium and nickel

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-CH2{N(H)C=C(H)N(Me)C}2Pd(OAc)2] with one diazolium diiodide salt precursor or by reacting [cis-CH2{N(H)C=C(H)N(Me)C}2PdI2] with two equivalents of NaOAc and the corresponding diazolium diiodide salts. 1H- and 13C-NMR as well as X-ray crystallographic data are discussed. Show more