723312-46-7Relevant academic research and scientific papers
Mononuclear Complexes of Copper(I), Palladium(II), and Ruthenium(II) with Oxalic Amidine-Type Ligands by Coupled Cation-/Anion coordination
B?ttcher, Lars,Scholz, Alexander,Walther, Dirk,Weisbach, Nancy,G?rls, Helmar
, p. 2103 - 2112 (2008/10/09)
Oxalamidines R1N=C(NHR2)-C(=NHR2)=NR 1 (H2A: R1 = R2 = p-tolyl; H 2B: R1 = R2 = mesityl) react with [Cu(CH 3CN)4](BF4)/PPh3 to form the mononuclear complexes {[(Ph3P)2Cu]AH2(F 4B)} (1) and {[(Ph3P)Cu]BH2(F4B)} (2). X-ray diffraction measurements of single crystals show that CuI is coordinated at the 1,4-diazadiene unit. Tetrafluoroborat is bonded at the 1,2-diamine unit via hydrogen bonds ("coupled cation-/anion coordination"). [(allyl)PdCl]2 reacts with H2A to form the allyl complex [(allyl)PdAH2?Cl2(allyl)Pd] (3). With H2B the analogous compound 4 is formed. In these complexes the (allyl)Pd+-fragment is coordinated at the 1,4-diazadiene part of the neutral oxalic amidine ligand. In addition, [allylPdCl2] - coordinates at the 1,2-diamine site. By analogous coupled cation-/anion coordination some RuII complexes, e. g. [(p-cymolRu(Cl)CH2?Cl] (6), and [(4,4′,4″-tri-t- butyl-terpyridin)(Cl)RuAH2?Cl] (9) can be prepared.
