15709-62-3Relevant academic research and scientific papers
Impact of tetrahedral and square planar geometry of Ni(II) complexes with (pseudo)halide ligands to magnetic properties
Lomjansky, Dominik,Rajnák, Cyril,Titi?, Ján,Monco?, Ján,Smolko, Luká?,Bo?a, Roman
, p. 352 - 358 (2018/10/05)
Four tetracoordinate Ni(II) complexes have been prepared, structurally characterized, and subjected to magnetometric studies. The complexes [Ni(PPh3)2(NCS)2], [Ni(dppp)(NCS)2], and [Ni(dppm)Br2] are planar and thus diamagnetic. The complex [Ni(biqu)Br2] is quasi-tetrahedral, with the geometry close to C2v symmetry, and paramagnetic. While on one side it resembles a prolate bisphenoid (the angle N-Ni-N = 83 deg), on the second side it mimics an oblate bisphenoid (Br-Ni-Br = 126 deg). It exhibits a zero-field splitting of the ground term 3A2 into three crystal-field multiplets that can be described by D and E parameters within the spin Hamiltonian formalism. The ab initio calculations confirm this interpretation; however, the evaluation of the spin-Hamiltonian parameters meets difficulties owing to the quasi-degeneracy of the electronic terms.
13C NMR studies of Thiocyanato Complexes
Tarafder, M. T. H.,Fatema, Kaniz
, p. 444 - 446 (2007/10/02)
Several thiocyanato complexes of nickel(II), zinc(II), palladium(II) and cadmium(II) containing auxiliary ligands PPh3, OPPh3, C2H5N and C5H5NO have been synthesized. 13C NMR spectra of the complexes reveal the relative acceptor properties of different metal ions.The study indicates that the heavier metals in a group are always weaker acceptors.
