Describe the chemistry involved in the conversion of the -NO2 groups in [Co((NO2)2sar)]Cl3 into -NH3+ groups in [Co((NH3)2sar)]Cl5. Hint:

Describe the chemistry involved in the conversion of the -NO2 groups in [Co((NO2)2sar)]Cl3 into -NH3+ groups in [Co((NH3)2sar)]Cl5. Hint: The conversion of R-NO2 to R-NH3 + requires 6 e- and 6 H+ and probably involves R-NO and RNHOH intermediates.