Synthesis, Structure, and Bonding of Group 8 Transition Metal Germyl Complexes, [Cp*M{κ²-Ge,S-GeCl₂C₇H₄NS₂}(PPh₃)] (M = Ru or Os)

The hemilabilty of 1,3-S,N-chelated transition metal (TM) complexes [Cp*M{κ2-S,N-C7H4NS2}(PPh3)] (Cp* = η5-C5Me5) (1a: M = Ru and 1b: M = Os) allows them to capture GeCl2 to generate TM–germyl complexes [Cp*M{κ2-Ge,S-GeCl2C7H4NS2}(PPh3)] (2a: M = Ru and 2b: M = Os). Based on the structural parameters, these complexes can be described as tethered germyl complexes. To investigate the bonding modes of these complexes, density functional theory (DFT) computations were carried out.