Cyclic voltammetr acetone

The first reduction of [Fe3(CO)i2] is now established as a diffusion-controlled, fully reversible process (137-139) giving [Fe3(CO)i2]. The second reduction of [Fe3(CO)x2] is variously described as (1) chemically irreversible in acetone or CH2CI2 at a platinum electrode, leading to cluster fragmentation (137) (2) not fully reversible in dry CH2CI2 even at cyclic voltammetric scan rates as high as 8 V sec (159) and (3) reversible at a scan rate of 100 mV sec" (138). 

Reduction beyond the monoanionic stage for [Co3(CO)9(/it3-CR)] is irreversible, even at 193 K in acetone or at cyclic voltammetric scan rates up to 1000 V sec" The addition of a second electron to the cluster (Ei/2 -1.2 V vs Ag/AgCl) apparently results in metal-metal bond cleavage as [Co(CO)4]" is formed as one of the reduction products (178). 

Fig. 32. Cyclic voltammetric response exhibited by Co3[C (C3H4)Fe(C5H5) ](CO)9 in Acetone solution. Platinum working electrode. Scan rate 0.2 Vs". Potential values are referred to Ag/AgCl reference electrode [from Ref. 82]...

Figure 2, Cyclic voltammetric responses of 1.8 mM [W2(p-SPh)2(CO)f (glassy carbon electrode, DMF/0.1 M BU4NBF4) and 0.3 mM [W2(pr PPh2)2(CO)sJ (Hg electrode, acetone/0.3 MBu4NPF at 0.1 Vs ...

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