Antiferromagnetic Interactions through the Thirteen Å Metal–Metal Distances in Heterometallic One‐Dimensional Chains

Abstract

AbstractA heterometallic and paramagnetic one‐dimensional aligned chain in −Rh(+2)−Rh(+2)− Pt(+2)−Ni(+2)−Pt(+2)− with direct metal−metal bonds was obtained via HOMO–LUMO interactions at the σ* (dz2) orbital between [Rh2(O2CCH3)4] and [Pt2Ni(piam)4(NH3)4] (piam=pivalamidate). The one‐dimensional chains had straight backbones attributed to face‐to‐face stacking of each complex, and the Ni atoms were separated by approximately 13 Å from four different metals. Each Ni atom had two unpaired electrons in the d‐orbitals, which strongly exchanged with J=−37.9 cm−1 through the diamagnetic −Pt−Rh−Rh−Pt− bonds.