b'\n_START_ARTICLE_\nIntermediar de reac\xc8\x9bie\n_START_SECTION_\nIntermediari instabili\n_START_PARAGRAPH_\nExist\xc4\x83 patru tipuri de intermediari de reac\xc8\x9bie instabili, care iau na\xc8\x99tere prin ruperea leg\xc4\x83turilor covalente din compu\xc8\x99ii organici: radicali liberi (R\xe2\x88\x99), carbocationi (R\xe2\x81\xba), carbanioni (R\xe2\x81\xbb) \xc8\x99i carbene (R\xe2\x82\x82C:)'