Reactions of Thiocarbonyl Complexes

The coordinated thiocarbonyl group more readily undergoes nucleophilic attack on the carbon atom and electrophilic attack on the sulfur atom than does the carbonyl group. Moreover, thiocarbonyl complexes may participate in reactions in which the thiocarbonyl group itself does not change, for example, substitution reactions involving ligands other than CS. 

Primary amines react with [M(CO)5(CS)] to form isocyanide complexes carbene complexes are probably formed as intermediates  

The nucleophilic attack on the carbon atom of the CS group readily occurs in the case of cationic thiocarbonyl complexes. Even compounds possessing weak nucleophilic properties such as alcohols and water attack the CS group. 

Such a type of reaction may further be illustrated by migration of the hydrido ligand to the CS group in hydrido complexes [equation (2.186)]. The thioformyl 

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