Coordination Chemistry Solutions: #26

26.* (1990 F 12) Consider a pair of isomeric cationic complexes having the molecular formula [Co(en) 2Br2]ClO 4. One is optically active but the other is not.

  1. Write structural formulas showing each isomeric complex but only one of the enantiomers. en = H2NCH2CH2NH2.

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  2. What is the oxidation state of cobalt in these complexes? How many d electrons are found in each complex?

The oxidation state is Co(III) with 6 d electrons.