TY  - JOUR
AU  - Schmitz, Sebastian
AU  - van Leusen, Jan
AU  - Izarova, Natalya V.
AU  - Bourone, Svenja D. M.
AU  - Ellern, Arkady
AU  - Kögerler, Paul
AU  - Monakhov, Kirill
TI  - Triangular {Ni3} coordination cluster with a ferromagnetically coupled metal-ligand core
JO  - Polyhedron
VL  - 144
SN  - 0277-5387
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - FZJ-2018-07492
SP  - 144 - 151
PY  - 2018
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000428829400019
DO  - DOI:10.1016/j.poly.2018.01.014
UR  - https://juser.fz-juelich.de/record/858632
ER  -