31. Consider the two structures A and B,..-阿摩線上測驗
31. Consider the two structures A and B, which of the following statements are correct?
(A) A is a Fischer Carbene and B is a Schrock Alkylidene.
(B) The carbene ligand in A should be described as a dianionic, 4-
electron donor, and the carbene ligand in B should be described as a
neutral, 2-electron donor.
(C) A can be prepared via a-H elimination.
(D) A tends to react with a nucleophile.
(E) B could react with BF3 to yield a carbide product.