Interplay of Magnetic Exchange Interactions and Ni-S-Ni Bond Angles in Polynuclear Nickel(II) Complexes

TL;DR

This study investigates how Ni-S-Ni bond angles influence magnetic exchange interactions in dinuclear and trinuclear Nickel(II) complexes, revealing structure-property relationships through comprehensive spectroscopic and magnetic analyses.

Contribution

It provides new insights into the relationship between chemical bonding and magnetic interactions in polynuclear Ni(II) complexes.

Findings

Bridging thiophenolate groups transmit magnetic exchange interactions.

Structural and magnetic properties are correlated.

Magnetic interactions depend on Ni-S-Ni bond angles.

Abstract

The ability of bridging thiophenolate groups to transmit magnetic exchange interactions between paramagnetic Ni(II) ions has been examined. For this purpose, dinuclear and trinuclear Ni(II)-complexes were prepared and fully characterized by IR- and UV-vis spectroscopy, X-ray crystallography, static magnetization measurements and high-field electron spin resonance (HF-ESR). We compare structural and magnetic properties of the two Ni(II)-complexes and discuss the relationships between magnetic interactions and chemical bonding.