Changes in Geometries and Spin States of Thiolato-Schiff Base NiN2S2 Complexes Containing N,N'-Biphenyl Backbones

A “Side‐on” Superoxonickel Complex [LNi(O2)] with a Square‐Planar Tetracoordinate Nickel(II) Center and Its Conversion into [LNi(μ‐OH)2NiL]

“…Similar values have been found for other mononuclear tetrahedral Ni II complexes, for example, with thiolato-Schiff base ligands (g = 2.09, D = 34-53 cm À1 ). [15] Thus, the magnetism of 3 originates entirely from the properties of the tetrahedral Ni II site of the complex, whereas the planar site, as expected, is diamagnetic, as confirmed by DFT calculations. [11] Although the mechanism is still unknown, we propose that 3 results from the transient Ni-oxo species 4 ({LNiO}) as primary nickel-containing product, which evidently acts as a hydrogen scavenger and subsequently undergoes dimerization.…”

Synthesis, crystal structure, magnetic properties and reactivity of a Ni–Ru model of NiFe hydrogenases with a pentacoordinated triplet (S=1) NiII center

“…¼ 2:07. The D value is among the highest observed for discrete nickel(II) complexes [13][14][15][16]. Since g = is lower than g ?…”

Controlled Thiolate Coordination and Redox Chemistry: Synthesis, Structure, Axial-Binding, and Electrochemistry of Dinickel(II) Dithiolate Macrocyclic Complexes

“…Bonds between these donors and the nickel atoms are typical for square planar nickel(II). [16] [30] In each macrocycle one of the two nickel atoms interacts very weakly with the central perchlorate ion (Figure 2, Ni···O 3.34Ϫ3.36 Å ). The mean planes of the two N 2 S 2 donor sets within each macrocycle intersect at angles of 137.6°[ for Ni (7), Ni (8)] to 140.0°[for Ni (5), Ni(6)].…”

“…[16] A series of related mononickel acyclic complexes has been studied and a wide variation in properties was found depending on the degree of distortion. [30] To probe the significance of this distortion binding studies were undertaken and led to the formation and characterisation of 4.…”