試題詳解

39. A wide variety of ligands can kinetically stabilize ions that would normally be potent oxidizing agents. Which of the following statements is NOT correct for an example of Co(III)- Co(Il) couple?
(A) Co(IIIl) is kinetically stable when coordinated with any ligand other than water of fluoride.
(B) The hydrated is a very strong oxidizing agent, reacting readily with water to form H₂ and Co(II).
(C) The oxidation of a Co(Il) complex to a Co(IIl) complex generally results in a change from the high-spin Co(II) to the low-spin Co(IIl) accompanied by a significant increase in LFSE with almost any ligand.
(D) The case in ( C ) often contributes to the stability of many Co(IIl) complexes, rending many of them weaker oxidizing agents than expected.
(E) None of above.