First row wheels, {(tBu3SiS)MX}12 (M = Co, X = Cl; M = Ni, X = Br), are common amongst both simpler and more complex aggregates†
Abstract
{(tBu3SiS)MX}12 are wheels for first row transition metals (M = Co, X = Cl; M = Ni, X = Br), but for nickel, simpler {e.g. [(tBu3SiS)Ni]2(μ-SSitBu3)2} and more complicated {e.g. [(μ-SSitBu3)Ni]5(μ5-S)} structures are by-products.