Group 8 Element Compounds Fe, Ru, Os

In 1966, King reported the first synthesis of thiocarboxylato iron complex CpFe(CO)2(PhCOS), achieved by treating [CpFe(CO)2]2 with thiobenzoic acid 

3-[(CH3)3C]2C5H3, x=3, 4) are acylated by acyl chlorides, giving the corresponding thio- 38 and seleno-carboxylato ruthenium complexes 39 [59,123]. The chalcogenocarboxylato ligands of 36-39 are monodentate (for bond distances, see Table 2). 

Only one osmium complex 40 with a thiobenzoato ligand has been synthesized, by the reaction of Os3(CO)io(CH3CN)2 with thiobenzoic acid [2]. The thiobenzoato ligand is bound to the metal in the ju,/] -mode through the 

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