摘要 : The carbene carbon atom in Fischer carbene complexes is well known to be susceptible to nucleophilic attack. Hence, complexes A bearing both Fischer carbene and thiolato ligands would be in equilibrium with the thiametalacycloprop... 展开 The carbene carbon atom in Fischer carbene complexes is well known to be susceptible to nucleophilic attack. Hence, complexes A bearing both Fischer carbene and thiolato ligands would be in equilibrium with the thiametalacyclopropane form B. Although the existence of an equilibrium between A and B was supported by NMR spectroscopy and reactivity studies, such complexes are scarce. A possible reason for this paucity lies in facile intramolecular nucleophilic substitution to form the RS-substituted carbene complex C. 收起