An inverse isotope effect and deuterium enrichments in hydrocarbons were observed in Fe catalyzed Fischer-Tropsch (FT) reactions. These results are explained by an Alkylidene mechanism by which the monomer of the polymerization-like reaction is MCH and the growing chain is RCH = M. The formation of CC bond is through the reaction of MCH and RCH = M, producing a new growing chain RCH₂CH = M. During the process of CC bond formation, the sp² carbon in RCH = M is changed to sp³ in newly formed growing chain RCH₂CH = M, which results in an inverse isotope effect. The rate of reaction of RCD = M with MCH/M≡CD is fast than that of RCH = M with MCH/M≡CD. The calculations based on alkylidene mechanism showed that the deuterium is enriched in hydrocarbons and that the deuterium enrichment is a function of carbon number.

在铁催化的费-托反应中观察到了同位素的反作用和氘在烃中的富集。这些结果可以通过亚烷基机理来解释，其中类似聚合反应的单体是M CH，增长链是RCH =M。C C键的形成是通过M CH和RCH = M的反应生成的。新生长链RCH ₂ CH = M.期间C的过程C键的形成，对SP ²碳在RCH = M改变为SP ³中新形成的生长链RCH ₂ CH = M，其结果在逆同位素效应。RCD = M与M CH /M≡CD的反应速率快于RCH = M与M的反应速率CH /M≡CD。基于亚烷基机理的计算表明，氘富含碳氢化合物，并且氘的富集是碳数的函数。