
TY  - JOUR
A1  - Robinson, BH 
A1  - Simpson, J 
A1  - Trounson, ME 
T1  - Amide Tricobaltcarbon Clusters With Multiple Redox Centers
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1986
VL  - 39
IS  - 9
SP  - 1435
EP  - 1447
KW  - 
UR  - https://doi.org/10.1071/CH9861435 
N2  - The complexes FcNHC (O)CCo3(CO)9 ( Fc = ferrocenyl ) (3) and Fc ( alaOMe )C(O)CCo3(CO)9 (ala = alanine ) (5) have been synthesized from the +C(O)CCo3(CO)9 cation and FcNH2 or Fc ( alaOMe )H respectively. Derivatives FcNHC (O)CCo3(CO)6[P( OPh )3]3 (4) and Fc ( alaOMe )C(O)CCo3(CO)6[P( OPh )3]3 (6) are also described. Analysis of the spectroscopic and redox behaviour shows that the amide linkage acts as a -I, -M substituent group to Fc and the Co3C unit acts as a-I, +M group. Unlike complexes where these redox  centres are directly linked, electronic effects are not transmitted between Co3C and Fc . Oxidation at the ferrocene centre and reduction at the Co3C centre in (3) and (5) is chemically reversible whereas oxidation of the amino acid moiety is irreversible; oxidation of the cluster takes place in (4) and (6) but no intervalence charge transfer is observed. 
ER  -

