20. Trien is a linear tetradentate polyamine. Which one is achiral?
(A) [a-Co(trien)Cl2]+
(B) [β- Co(trien)Cl2]+
(C) [γ-Co(trien)Cl2]+
(D) [trans-Co(trien)Cl2]+
(E) none of the above

答案：登入後查看
統計： A(0), B(0), C(0), D(1), E(0) #2991261