Abstract
Different substituents at the β-diiminato ligand in low-valent [LFe(tol)] (L = β-diiminato) complexes fundamentally change their reactivity towards yellow arsenic. By using dmp (2,6-dimethylphenyl) as flanking groups, the tetranuclear complexes [(LFe)4As8] (L = L1 (1), L2 (2)) are isolated. For dipp (2,6-diisopropylphenyl) substituted ligands, dinuclear complexes [(LFe)2(cyclo-As4)] (L = L3 (3a), L4 (4a)) are obtained. Not only the choice of the ligand impacts the product formation, but also the temperature of the crystallization can shift their ratio in the solid state.
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