A Nickel(II) Gold(I) <scp>D</scp>‐Penicillaminate Coordination System with Multiple Switching in Color, Magnetism, and Chirality

Abstract

Red, blue, and green: A red NiIIAuI complex with a low-spin square-planar NiN2S2 configuration can be converted into a green high-spin octahedral NiO3S3 complex by lowering the pH (see scheme; pH change: red arrows). Increasing the Ni/Au ratio (Ni/Au change: blue arrows) gives a light blue octahedral NiN2O2S2 complex; increasing the pH or decreasing the Ni/Au ratio gives a blue octahedral NiN3S3 configuration.