%0 Journal Article
%A Schmitz, Sebastian
%A van Leusen, Jan
%A Izarova, Natalya V.
%A Bourone, Svenja D. M.
%A Ellern, Arkady
%A Kögerler, Paul
%A Monakhov, Kirill
%T Triangular {Ni3} coordination cluster with a ferromagnetically coupled metal-ligand core
%J Polyhedron
%V 144
%@ 0277-5387
%C Amsterdam [u.a.]
%I Elsevier Science
%M FZJ-2018-07492
%P 144 - 151
%D 2018
%X The coordination characteristics of a tridentate, π-conjugated Schiff base (HL·SMe) combined with 4-(methylthio)benzoic acid (Hbza·SMe) were explored in methanol solution. A two-step aerobic process involving the precursor NiCl2·6H2O afforded the trinuclear coordination compound [NiII3(L·SMe)4(bza·SMe)(MeOH)2]Cl0.5(CH3O)0.5·5.5MeOH·H2O (1), while the precursor Ni(ClO4)2·6H2O resulted in [NiII3(L·SMe)4(bza·SMe)(MeOH)2](ClO4)0.75(CH3O)0.25·1.5MeOH·0.75H2O (2); in both cases the thioether-containing ligands are key to isolation of crystalline products. Their solvent-free cationic motif [Ni3(L·SMe)4(bza·SMe)]+, supported by two different types of monodeprotonated chelate ligands, has been studied by electrospray ionization mass spectrometry. 1 and 2 crystallize in the triclinic space group and monoclinic space group Cc, respectively, and feature a hitherto not observed triangular metal-ligand skeleton that is characterized by predominantly ferromagnetic exchange coupling between Ni(II) ions. Proof-of-concept infrared reflection–absorption spectroscopy measurements of 1 deposited on a gold substrate indicate that this moisture-stable compound retains its main structural features upon adsorption on the metal surface, which enables subsequent studies of catalytic properties of 1 on a solid support.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000428829400019
%R 10.1016/j.poly.2018.01.014
%U https://juser.fz-juelich.de/record/858632