問題詳情

66. Structure I-IV may represent a conformation of 2,2-difluorobutane sighting along any C-C bond. Please pick up rightstructures. 
(A) I, II, III
(B) II, III, IV
(C) I, II, IV
(D) all of the above
(E) none of the above

參考答案

答案:C
難度:適中0.6
統計:A(1),B(0),C(3),D(0),E(1)

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