Mol ~ ( - 1 ) . The experiments show that reduction is trans-addition and the hydrogen of the product comes from KBH_4 . On the basis of experimental results a bimolecular surface reaction mechanism has been proposed .

mol~（-1），实验指出还原 反应 是 反 式 加 成，氢来自KBH4， 从而 在此基础上提出了表面分子反应机理图式。

The addition of alkene and bromine 、 iodine non-conjugate alkene and chlorine were mainly in Trans-Addition . and the addition of conjugate aromatic alkene and chlorine were mainly in Cis-Addition .

烯烃与溴、碘的加 成及非共轭烯烃与氯的加 成以 反式为主，而共轭的芳 烯烃与氯则以顺式加成为主；