The structure of cyanocobalamin, one of the forms of vitamin B12. Notice that cyanocobalamin is a complex of the transition metal cobalt (Co).

Characterize this compound in the following ways:

(a) The oxidation state of the cobalt 

(b) The dⁿ count (that is, the value of n)

(c) The total electron count around the metal

Figure P18.65

Transcribed Image Text:

(a) H₂N i H₂NCCH₂. H3C" H₂C H i H₂NCCH₂- NH CH₂ CH₂ H₂C CH3 T CH₂ T -N CH₂ 0- T H₂CC. H HOCH2 H₂N. CH3 CN Co+ CH3 H₂C N: CH3 OH, K *CH,CH,CNH, CH3 CH3 CH,CH,CNH, N PRAESE CH3 CH3 (b) N Z CN Co+ CH3 CH3